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Yılmaz HK, Türker M, Kutlu EY, Mercantepe T, Pınarbaş E, Tümkaya L, Atak M. Investigation of the effects of white tea on liver fibrosis: An experimental animal model. Food Sci Nutr 2024; 12:2998-3006. [PMID: 38628196 PMCID: PMC11016422 DOI: 10.1002/fsn3.3980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 04/19/2024] Open
Abstract
Liver fibrosis is a common, progressive disease that affects millions of patients worldwide. In this study, it was aimed at investigating the effect of white tea on liver fibrosis in an in-vivo environment by creating an experimental liver fibrosis model on rats. In this study, an experimental liver fibrosis model was created with carbon tetrachloride (CCl4) in Sprague-Dawley rats to investigate the effect of white tea on liver fibrosis. Rats are treated with CCl4 (1 mL/kg) to constitute the liver fibrosis model. White tea was given ad libitum with drinking water. As a result of the study, liver tissue hydroxyproline levels were found to be significantly lower (p = .001) in the white tea group. Histopathologically, it was found that the liver tissue histopathological damage score (LHDS) and fibrosis scoring were significantly lower (p < .001) in the white tea group. However, although it was not statistically significant in the group given white tea, compared with the fibrosis group, it was found that the malondialdehyde (MDA) level in the liver tissues was lower, the glutathione (GSH) level was higher, and the serum alanine aminotransferase (ALT) levels were lower. The study explained the effect of white tea on liver fibrosis and suggested that white tea might be beneficial in reducing the progression of liver fibrosis.
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Affiliation(s)
- Hülya Kılıç Yılmaz
- Department of Clinical Biochemistry, Faculty of MedicineRecep Tayyip Erdogan UniversityRizeTurkey
| | - Merve Türker
- Biochemistry LaboratoryGumushane State HospitalGumushaneTurkey
| | - Eda Yılmaz Kutlu
- Department of Clinical Biochemistry, Faculty of MedicineRecep Tayyip Erdogan UniversityRizeTurkey
| | - Tolga Mercantepe
- Department of Histology, Faculty of MedicineRecep Tayyip Erdogan UniversityRizeTurkey
| | - Esra Pınarbaş
- Department of Clinical Biochemistry, Faculty of MedicineRecep Tayyip Erdogan UniversityRizeTurkey
| | - Levent Tümkaya
- Department of Histology, Faculty of MedicineRecep Tayyip Erdogan UniversityRizeTurkey
| | - Mehtap Atak
- Department of Clinical Biochemistry, Faculty of MedicineRecep Tayyip Erdogan UniversityRizeTurkey
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Kalyoncu A, Balaban E, Mercantepe T, Tümkaya L. Dexamethasone and concentrated growth factors on peripheral nerve injury: A clinic-relevant animal study. J Stomatol Oral Maxillofac Surg 2024:101850. [PMID: 38555076 DOI: 10.1016/j.jormas.2024.101850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/20/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
BACKGROUND Mandibular nerve injury is a common clinical condition that affects clinicians' management and patients' quality of life. In the literature, there are various effective treatments available. The primary purpose of this study was to determine and compare the effects of dexamethasone and concentrated growth factor (CGF) on regeneration in patients with nerve trauma that mimics clinical situations. METHODS In this study, 36 rats were divided into 3 groups: the control, dexamethasone and CGF groups. The inferior alveolar nerve was traumatized through the extraction socket after mandibular molar tooth extraction in each group. RESULTS The data showed a decrease in the control (4.5-4), dexamethasone (3-2), and CGF (4-3) groups according to the histological injury severity score (HISS) results. Compared with those in the other groups, the number of degenerative axons and edematous areas observed via histological examination were significantly lower in the CGF groups. Similarly, compared with those in the control group, the nNOS and Neurofilament-H positivity in the dexamethasone group on the 30th day (2,2 to 1,1 respectively) was significantly lower. The positivity of all the primary antibodies in the 3rd and 30th day CGF groups was significant compared than that in the dexamethasone 30th day group. CONCLUSION According to the results of the analysis of the immunohistopathological and HISS data, the CGF groups exhibited greater regeneration than did the dexamethasone groups.
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Affiliation(s)
- Alperen Kalyoncu
- Recep Tayyip Erdoğan University, Department of Oral and Maxillofacial Surgery, Rize, Türkiye
| | - Emre Balaban
- Recep Tayyip Erdoğan University, Department of Oral and Maxillofacial Surgery, Rize, Türkiye
| | - Tolga Mercantepe
- Recep Tayyip Erdoğan University, Department of Histology and Embrylogy, Rize, Türkiye
| | - Levent Tümkaya
- Recep Tayyip Erdoğan University, Department of Histology and Embrylogy, Rize, Türkiye
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Ciftel S, Tumkaya L, Saral S, Mercantepe T, Akyildiz K, Yilmaz A, Mercantepe F. The impact of apelin-13 on cisplatin-induced endocrine pancreas damage in rats: an in vivo study. Histochem Cell Biol 2024:10.1007/s00418-024-02269-x. [PMID: 38368592 DOI: 10.1007/s00418-024-02269-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2024] [Indexed: 02/19/2024]
Abstract
Apelin-13 is a peptide hormone that regulates pancreatic endocrine functions, and its benefits on the endocrine pancreas are of interest. This study aims to investigate the potential protective effects of apelin-13 in cisplatin-induced endocrine pancreatic damage. Twenty-four rats were divided into four groups: control, apelin-13, cisplatin, and cisplatin + apelin-13. Caspase-3, TUNEL, and Ki-67 immunohistochemical staining were used as markers of apoptosis and mitosis. NF-κB/p65 and TNFα were used to show inflammation. β-cells and α-cells were also evaluated with insulin and glucagon staining in the microscopic examination. Pancreatic tissue was subjected to biochemical analyses of glutathione (GSH) and malondialdehyde (MDA). Apelin-13 ameliorated cisplatin-induced damage in the islets of Langerhans. The immunopositivity of apelin-13 on β-cells and α-cells was found to be increased compared to the cisplatin group (p = 0.001, p = 0.001). Mitosis and apoptosis were significantly higher in the cisplatin group (p = 0.001). Apelin-13 reduced TNFα, NF-κB/p65 positivity, and apoptosis caused by cisplatin (p = 0.001, p = 0.001, p = 0.001). While cisplatin caused a significant increase in MDA levels (p = 0.001), apelin caused a significant decrease in MDA levels (p = 0.001). The results demonstrated a significant decrease in pancreatic tissue GSH levels following cisplatin treatment (p = 0.001). Nevertheless, apelin-13 significantly enhanced cisplatin-induced GSH reduction (p = 0.001). On the other hand, the serum glucose level, which was measured as 18.7 ± 2.5 mmol/L in the cisplatin group, decreased to 13.8 ± 0.7 mmol/L in the cisplatin + apelin-13 group (p = 0.001). The study shows that apelin-13 ameliorated cisplatin-induced endocrine pancreas damage by reducing oxidative stress and preventing apoptosis.
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Affiliation(s)
- Serpil Ciftel
- Department of Endocrinology and Metabolism, Erzurum Regional Training and Research Hospital, Erzurum, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Sinan Saral
- Department of Physiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Kerimali Akyildiz
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yilmaz
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Filiz Mercantepe
- Department of Endocrinology and Metabolism, Faculty of Medicine Recep, Tayyip Erdogan University, 53010, Rize, Turkey.
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Aktepe R, Ucuncu Y, Tumkaya L, Mercantepe T, Topcu A, Uydu HA, Atak M. Long-term protective effects of lamotrigine in a rat ovarian ischemia-reperfusion model. Tissue Cell 2024; 86:102297. [PMID: 38194852 DOI: 10.1016/j.tice.2023.102297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 12/01/2023] [Accepted: 12/30/2023] [Indexed: 01/11/2024]
Abstract
Ovarium torsion is a gynecological emergency that is common in women of reproductive age and requires early diagnosis and intervention. In this study, we aimed to investigate the long-term anatomical, histological and biochemical protective effects of lamotrigine in ovariums in the ischemia - reperfusion (I-R) model created experimentally in rats. A total of 40 female Sprague-Dawley rats, 14 weeks old, weighing 220-270 g were used in the study. The subjects were randomly distributed to form 4 groups named SHAM group, I - R group, I - R + Lamotrigine (LTG) group and R + LTG group. Under general anesthesia, the ovaries of the rats were reached and ischemia was created for 3 h with vascular clamps. 20 mg / kg LTG was administered intraperitoneally (ip.) to group 3 30 min before ischemia and to group 4 30 min before reperfusion. At the third hour of ischemia, the vascular clamps were opened and the abdomen of the rats was closed according to the surgical procedure. The rats were followed up for 28 days postoperatively and the ovarium tissues taken on the 28th day were examined anatomically and histologically. Biochemically, estradiol (E2), follicle stimulating hormone (FSH) and antimullerian hormone (AMH) levels were measured from blood samples taken from their hearts. Granulosa cells with diffuse vaculations were observed in degenerative follicles in group I-R. Again in this group, severe hemorrhage, fibrosis and edematous areas were observed in the ovarium stroma (Ovarian Histopathological Scoring (OHS): 7). In the I - R + LTG group, OHS was statistically significantly lower than the I - R group (OHS: 2; p < 0.000). In the R + LTG group, although the OHS score was calculated to be lower than the I - R group, there was no statistically significant difference (OHS: 6; p > 0.05). The protective effect of LTG against experimentally created ischemia and reperfusion damage was determined anatomically and histologically. No protective effect of LTG was observed in terms of FSH, E2 and AMH values measured from the blood sera of rats. These findings may provide a basis for future studies using LTG to treat ovarian ischemia-reperfusion injury.
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Affiliation(s)
- Riza Aktepe
- Department of Anatomy, Faculty of Medicine, Recep Tayyip Erdogan University, Rize 53010, Turkey.
| | - Yilmaz Ucuncu
- Department of Anatomy, Faculty of Medicine, Karadeniz Technical University, Trabzon, 61080, Turkey
| | - Levent Tumkaya
- Department of Histology, and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize 53010, Turkey
| | - Tolga Mercantepe
- Department of Histology, and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize 53010, Turkey
| | - Atilla Topcu
- Department of Pharmacology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize 53010, Turkey
| | - Huseyin Avni Uydu
- Departments of Biochemistry, Faculty of Medicine, Samsun University, Samsun 55060, Turkey
| | - Mehtap Atak
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize 53010, Turkey
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Bostan SA, Yemenoglu H, Kose O, Akyildiz K, Mercantepe T, Saral S, Tumkaya L, Yilmaz A. Preventive effects of melatonin on periodontal tissue destruction due to psychological stress in rats with experimentally induced periodontitis. J Periodontal Res 2024. [PMID: 38214233 DOI: 10.1111/jre.13231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 11/07/2023] [Accepted: 12/19/2023] [Indexed: 01/13/2024]
Abstract
OBJECTIVE AND BACKGROUND Psychological stress is a potential modifiable environmental risk factor causally related to the exacerbation of periodontitis and other chronic inflammatory diseases. This animal study aimed to investigate comprehensively the preventive efficacy of systemic melatonin administration on the possible effects of restraint stress on the periodontal structures of rats with periodontitis. METHODS Forty-eight male Sprague Dawley rats were randomly divided into six groups: control, restraint stress (S), S-melatonin (S-Mel), experimental periodontitis (Ep), S-Ep, and S-Ep-Mel. Periodontitis was induced by placing a 3.0 silk suture in a sub-paramarginal position around the cervix of the right and left lower first molars of the rats and keeping the suture in place for 5 weeks. Restraint stress was applied simultaneously by ligation. Melatonin and carriers were administered to the control, S, Ep, and S-Ep groups intraperitoneally (10 mg/body weight/day, 14 days) starting on day 21 following ligation and subjection to restraint stress. An open field test was performed on all groups on day 35 of the study. Periodontal bone loss was measured via histological sections. Histomorphometric and immunohistochemical (RANKL and OPG) evaluations were performed on right mandibular tissue samples and biochemical (TOS (total oxidant status), TAS (total antioxidant status), OSI (oxidative stress index), IL-1β, IL-10, and IL-1β/IL-10) evaluations were performed on left mandibular tissue samples. RESULTS Melatonin significantly limited serum corticosterone elevation related to restraint stress (p < .05). Restraint stress aggravated alveolar bone loss in rats with periodontitis, while systemic melatonin administration significantly reduced stress-related periodontal bone loss. According to the biochemical analyses, melatonin significantly lowered IL-1β/IL-10, OSI (TOS/TAS), and RANKL/OPG rates, which were significantly elevated in the S-Ep group. CONCLUSION Melatonin can significantly prevent the limited destructive effects of stress on periodontal tissues by suppressing RANKL-related osteoclastogenesis and oxidative stress.
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Affiliation(s)
- Semih Alperen Bostan
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Hatice Yemenoglu
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Oğuz Kose
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Kerimali Akyildiz
- Department of Medical Services and Techniques, School of Vocational Health Care Services, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Sinan Saral
- Department of Physiology, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yilmaz
- Department of Biochemistry, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Ateş A, Kurt A, Mercantepe T. Effects of mineral trioxide aggregate and methyl sulfonyl methane on pulp exposure via RUNX2 and RANKL pathways. Odontology 2024:10.1007/s10266-023-00885-y. [PMID: 38194042 DOI: 10.1007/s10266-023-00885-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 12/04/2023] [Indexed: 01/10/2024]
Abstract
The aim of this study was to determine the therapeutic effects of mineral trioxide aggregate (MTA) and methyl sulfonyl methane (MSM) on pulp damage due to pulp exposure through the RUNX2 and RANKL pathways. Seventy-two male Sprague-Dawley rats aged 4-6 months and weighing 250-300 g were divided into healthy, control, MTA, and MSM groups. After experimental applications, all rats at 2, 4, and 8 weeks were killed anesthetically with xylazine hydrochloride (Rompun, Bayer) 30 mg/kg and ketamine hydrochloride (Ketalar, Pfizer) 50 mg/kg injections (i.p.). We observed that necrotic odontoblasts, edema, inflammation, and vascular congestion findings were reduced from week 2 to week 8 in the MSM treatment group after pulp capping compared to the control group and MTA group. Similarly, we found a decrease in RUNX2 and RANKL levels in the MSM application group compared to the control and MTA groups (p < 0.05). MSM material has shown therapeutic effects on pulp capping treatment-induced pulp injury via increased RUNX2 ve RANKL expression.
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Affiliation(s)
- Altar Ateş
- Department of Pediatric Dentistry, Faculty of Dentistry, Recep Tayyip Erdogan University, 53100, Rize, Turkey
| | - Ayca Kurt
- Department of Pediatric Dentistry, Faculty of Dentistry, Recep Tayyip Erdogan University, 53100, Rize, Turkey.
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, 53100, Rize, Turkey
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Sen A, Erdivanlı B, Tümkaya L, Uydu HA, Mercantepe T, Batcik Ş, Ozdemir A. The effects of dexmedetomidine on trauma-induced secondary injury in rat brain. Neurol Res 2024; 46:23-32. [PMID: 37842946 DOI: 10.1080/01616412.2023.2257446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 07/29/2023] [Indexed: 10/17/2023]
Abstract
BACKGROUND The objective of this study was to investigate the effect of dexmedetomidine (Dex), a sedative drug with little or no depressant effect on respiratory centers, on secondary injury in rat brain tissue by means of the Na+/K+ ATPase enzyme, which maintains the cell membrane ion gradient; malondialdehyde, an indicator of membrane lipid peroxidation; glutathione, an indicator of antioxidant capacity; and histopathological analyses. METHODS Eighteen rats were randomized into three groups: the trauma group received anesthesia, followed by head trauma with a Mild Traumatic Brain Injury Apparatus; the Trauma+Dex group received an additional treatment of 100 µg/kg intraperitoneal dexmedetomidine daily for three days; the Control group received anesthesia only. RESULTS The highest MDA levels compared to the Control group were found in the Trauma group. Mean levels in the Trauma+Dex group were lower, albeit still significantly high compared to the Control group. Glutathione levels were similar in all groups. Na/K-ATPase levels were significantly lower in the Trauma group compared to both the Control group and the Trauma+Dex group. Histopathologic findings of tissue degeneration including edema, vascular congestion and neuronal injury, and cleaved caspase-3 levels were lower in the Trauma+Dex group compared with the Trauma group. CONCLUSIONS Dexmedetomidine administered during the early stage of traumatic brain injury may inhibit caspase-3 cleavageHowever, the mechanism does not seem to be related to the improvement of MDA or GSH levels.
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Affiliation(s)
- Ahmet Sen
- Department of Anesthesiology and Reanimation, Trabzon Faculty of Medicine, University of Health Sciences, Trabzon, Turkey
| | - Basar Erdivanlı
- Department of Anestjesıology and Reamınatıon, Faculty of Medıcıne, Recep Tayyıp Erdogan Unıversıty
| | - Levent Tümkaya
- Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Hüseyin Avni Uydu
- Histology and Embryology and Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Şule Batcik
- Department of Anestjesıology and Reamınatıon, Faculty of Medıcıne, Recep Tayyıp Erdogan Unıversıty
| | - Abdullah Ozdemir
- Department of Anestjesıology and Reamınatıon, Faculty of Medıcıne, Recep Tayyıp Erdogan Unıversıty
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Yilmaz H, Mercantepe F, Tumkaya L, Mercantepe T, Yilmaz A, Yilmaz Rakici S. The potential antioxidant effect of N-acetylcysteine on X-ray ionizing radiation-induced pancreas islet cell toxicity. Biochem Biophys Res Commun 2023; 685:149154. [PMID: 37913693 DOI: 10.1016/j.bbrc.2023.149154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/12/2023] [Accepted: 10/25/2023] [Indexed: 11/03/2023]
Abstract
PURPOSE Previous research has highlighted the impact of X-ray irradiation-induced organ damage, on cancer patients after radiation therapy. The ionizing radiation-induced oxidative stress causes injury to the pancreatic islet cells of Langerhans. We used histopathological, immunohistochemical, and biochemical analyses to examine α- and β-cells in the islets of Langerhans in rats undergoing whole-body x-ray ionizing radiation, a group of which was treated with NAC. MATERIAL AND METHODS Twenty-four male rats were randomly divided into 3 groups, one control, and two experimental groups. Group I (Control) was administered only saline solution (0.09% NaCl) by oral gavage for 7 days. Group II (IR) was administrated whole body single dose 6 Gray ionizing radiation (IR) and saline solution (0.09% NaCl) by oral gavage for 7 days. Group III (IR + NAC) was administered 300 mg/kg NAC (N-acetylcysteine) by oral gavage for 7 days, 5 days before, and 2 days after 6 Gray IR application. RESULTS In the X-ray irradiation group, we observed diffuse necrotic endocrine cells in the islets of Langerhans. In addition, we found that Caspase-3, malondialdehyde (MDA) levels increased, and insulin, glucagon, and glutathione (GSH) levels decreased in the IR group compared to the control group. In contrast, we observed a decrease in Caspase-3, and MDA levels in necrotic endocrine cells, and an increase in insulin, glucagon, and GSH levels in the IR + NAC group compared to the IR group. CONCLUSION This study provides evidence for the beneficial effects of N-acetyl cysteine on islets of Langerhans cells with X-ray ionizing-radiation-induced damage in a rat model.
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Affiliation(s)
- Hamit Yilmaz
- Department of Biophysics, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey.
| | - Filiz Mercantepe
- Department of Endocrinology and Metabolic Diseases, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yilmaz
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Sema Yilmaz Rakici
- Department of Radiation Oncology, Faculty of Medicine, Recep Tayyip Erdogan University, 53100, Rize, Turkey
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Altın A, Korkmaz MZ, Atak M, Mercantepe T, Yılmaz HK. Celastrol restricts experimental periodontitis related alveolar bone loss by suppressing inflammatory cytokine response. Biomedicine (Taipei) 2023; 13:44-50. [PMID: 38532834 PMCID: PMC10962540 DOI: 10.37796/2211-8039.1421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/21/2023] [Accepted: 03/24/2023] [Indexed: 03/28/2024] Open
Abstract
Introduction Periodontitis is a common chronic inflammatory disease characterized by the destruction of the supporting structures of the teeth. The host defense mechanisms are responsible for inflamatuar and destructive reactions in periodontitis. Celastrol is one of the most promising components of the plant in Eastern and Southern China that has a long history of use in traditional medicine for the treatment of inflammatory conditions. Aim The aim of this animal study was to inspect the preventive or restrictive effects of celastrol on periodontitis-related inflammatory host response and alveolar bone loss. Methods 24 male Sprague Dawley rats were randomly assigned into 3 groups: control, experimental periodontitis (Ep), and experimental periodontitis-celastrol (Ep-Cel). Periodontitis was induced by placing ligatures sub-paramarginally around the mandibular first molars of the rats in the Ep and Ep-Cel groups and maintaining the ligatures for 15 days. For 14 days following the ligature placement, celastrol administration (1 mg/kg BW day) for the Ep-Cel group and vehicle injection for the control and Ep groups was carried out. At the end of the experiment, mandibula and gingiva samples were obtained after the euthanasia. Alveolar bone loss was measured on serial histological slices; Tumor Necrosis Factor-α and Interleukin-1β levels were measured on gingiva samples by ELISA. Results Systemic celastrol administration significantly restricted the alveolar bone loss that was higher in rats with periodontitis. (p < 0.05) Tumor Necrosis Factor-α and Interleukin-1β levels that were high in the gingiva of the rats with periodontitis were found significantly lower in rats administered celastrol. (p < 0.05). Conclusion Celastrol restricted periodontitis-related alveolar bone loss by suppressing the inflammatory response.
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Affiliation(s)
- Ahmet Altın
- Istanbul Kent University, Faculty of Dentistry, Department of Periodontology, İstanbul,
Turkey
| | - Meltem Zihni Korkmaz
- Recep Tayyip Erdogan University, Faculty of Dentistry, Department of Periodontology, Rize,
Turkey
| | - Mehtap Atak
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Biochemistry, Rize,
Turkey
| | - Tolga Mercantepe
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Histology and Embryology, Rize,
Turkey
| | - Hülya Kılıç Yılmaz
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Biochemistry, Rize,
Turkey
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Ergene S, Hemsinli D, Karakisi SO, Tümkaya L, Mercantepe T, Yilmaz A, Yel I. Resveratrol Attenuates Degeneration and Apoptosis of Cardiomyocytes Induced by Aortic Clamping. Braz J Cardiovasc Surg 2023; 38:e20230224. [PMID: 37801567 PMCID: PMC10550301 DOI: 10.21470/1678-9741-2023-0224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 06/16/2023] [Indexed: 10/08/2023] Open
Abstract
INTRODUCTION Objective: To investigate the potential beneficial effects of resveratrol (RVT) against ischemia-reperfusion injury of myocardial tissue during surgical treatment of ruptured abdominal aortic aneurysm. METHODS Four groups were established - control, ischemia/reperfusion (I/R), sham (I/R+solvent/dimethyl sulfoxide [DMSO]), and I/R+RVT. Ruptured abdominal aortic aneurysm model was used as the experimental protocol. RESULTS In the I/R and I/R+DMSO groups, malondialdehyde (MDA) levels in myocardial tissue were found to be significantly increased compared to the control group. The MDA level in myocardial tissue was significantly decreased in the I/ R+RVT group compared to the I/R group. In I/R and I/R+DMSO groups, glutathione peroxidase (GSH) levels in myocardial tissue were found to be significantly decreased compared to the control group. The GSH level in the myocardial tissue was significantly increased in the I/R+RVT group compared to the I/R group. In the light microscope, isotropic and anisotropic band disorganized atypical cardiomyocytes in the I/R group and degenerative cardiomyocytes and edematous areas in the I/R+DMSO group were observed. Degenerative cardiomyocytes and edematous areas were decreased in the I/R+RVT group. When heart tissue sections incubated with cleaved caspase-3 primary antibodies were examined under the light microscope, apoptotic cardiomyocytes were present in I/R and I/R+DMSO groups. A decrease in the number of apoptotic cardiomyocytes was observed in the I/R+RVT group. CONCLUSION The findings of the present study indicate that RVT exhibits protective effects against ischemia-reperfusion injury occurring in the myocardium as a distant organ as a result of abdominal aorta clamping.
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Affiliation(s)
- Saban Ergene
- Department of Cardiovascular Surgery, Faculty of Medicine, Recep
Tayyip Erdogan University, Rize, Turkey
| | - Dogus Hemsinli
- Department of Cardiovascular Surgery, Faculty of Medicine, Recep
Tayyip Erdogan University, Rize, Turkey
| | - Sedat Ozan Karakisi
- Department of Cardiovascular Surgery, Faculty of Medicine, Recep
Tayyip Erdogan University, Rize, Turkey
| | - Levent Tümkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep
Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep
Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yilmaz
- Department of Medical Biochemistry, Faculty of Medicine, Recep
Tayyip Erdogan University, Rize, Turkey
| | - Ibrahim Yel
- Department of Cardiovascular Surgery, Faculty of Medicine, Recep
Tayyip Erdogan University, Rize, Turkey
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Dil E, Topcu A, Mercantepe T, Tumkaya L, Akyildiz K, Saral S, Yilmaz A. Agomelatine on cisplatin-induced nephrotoxicity via oxidative stress and apoptosis. Naunyn Schmiedebergs Arch Pharmacol 2023; 396:2753-2764. [PMID: 37480488 DOI: 10.1007/s00210-023-02632-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 07/14/2023] [Indexed: 07/24/2023]
Abstract
Drug-induced nephrotoxicity is the greatest deterrent to the use of cisplatin, which is a frequently used chemotherapeutic with proven effectiveness in cancer therapy. Agomelatine, which is used in the treatment of sleep disorders and depression, has gained attention in recent years with its antioxidative and anti-inflammatory effects. In this study, the effects of the synthetic melatonin agonist agomelatine on nephrotoxicity were investigated in a rat model of cisplatin-induced nephrotoxicity using biochemical, histological, and immunohistochemical methods. Thirty-two male rats were divided into 4 groups: 1. control group, 2. agomelatine group, 3. cisplatin group, 4. cisplatin + agomelatine group. In the cisplatin group, there were widespread atypical glomerular structures and vacuolization in tubular epithelial cells, necrotic tubules, deterioration of brush border structure in proximal tubules, and fibrotic areas characterized by diffuse polymorphonuclear leukocyte (PNL) and extensive collagen deposition in the interstitial spaces. However, in the cisplatin + agomelatine group, we observed a reduction in glomeruli of atypical structure and necrotic tubules, in PNL infiltration in interstitial spaces, and fibrotic areas compared to the cisplatin group. The cisplatin + agomelatine group showed lower malondialdehyde (MDA) serum creatinine, serum urea levels, and higher glutathione (GSH) levels compared to the cisplatin group. Immunohistochemical analyses revealed that the elevated NF-kβ/p65, 8-OHdG, and cleaved caspase-3 positivity in the cisplatin group had significantly decreased in the cisplatin + agomelatine group. In conclusion, agomelatine showed a nephroprotective effect against cisplatin-induced nephrotoxicity.
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Affiliation(s)
- Eyup Dil
- Department of Urology Faculty of Medicine, Recep Tayyip Erdogan University, 2 Nolu Sehitler Street, Rize, 53010, Turkey.
| | - Atilla Topcu
- Department Pharmacology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
| | - Tolga Mercantepe
- Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
| | - Levent Tumkaya
- Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
| | - Kerimali Akyildiz
- Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
| | - Sinan Saral
- Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
| | - Adnan Yilmaz
- Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
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12
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Mercantepe F, Tumkaya L, Mercantepe T, Rakici SY, Ciftel S, Ciftel S. Radioprotective effects of α2-adrenergic receptor agonist dexmedetomidine on X-ray irradiation-induced pancreatic islet cell damage. Naunyn Schmiedebergs Arch Pharmacol 2023; 396:1827-1836. [PMID: 36877270 DOI: 10.1007/s00210-023-02454-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 02/27/2023] [Indexed: 03/07/2023]
Abstract
Comprehensive epidemiological analyses conducted in the last 30 years have revealed a link between radiation and DM. We aimed to determine the effects of dexmedetomidine pretreatment on radiation-induced pancreatic islet cell damage. Twenty-four rats were divided into three groups: group 1 (control group), group 2 (only X-ray irradiation group), and group 3 (X-ray irradiation + dexmedetomidine). We observed necrotic cells with vacuoles accompanying loss of cytoplasm in the islets of Langerhans, extensive edematous areas, and vascular congestions in group 2. In group 3, we observed a decrease in necrotic cells in the islets of Langerhans, and edematous areas and vascular congestion was also reduced. We determined a decrease in β-cells, α-cells, and D-cells in the islets of Langerhans in group 2 compared to the control group. In group 3, β-cells, α-cells, and D-cells were elevated compared to group 2. Ionizing radiation may induce DM. Dexmedetomidine appears to exert a radioprotective effect.
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Affiliation(s)
- Filiz Mercantepe
- Department of Endocrinology and Metabolism, Faculty of Medicine, Recep Tayyip Erdogan University, 2 Nolu Sehitler Street, Rize, 53020, Turkey.
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Sema Yilmaz Rakici
- Department of Radiation Oncology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Serpil Ciftel
- Department of Endocrinology and Metabolism, Faculty of Medicine, Erzurum Regional Education and Research Hospital, Erzurum, Turkey
| | - Sedat Ciftel
- Department of Gastroenterology, Faculty of Medicine, Erzurum Regional Education and Research Hospital, Erzurum, Turkey
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Findik H, Aslan MG, Okutucu M, Yılmaz A, Tümkaya L, Mercantepe T, Akyıldız K, Uzun F. Protective Effect of Vaccinium myrtillus Extract on X-ray Irradiation-Induced Retinal Toxicity via eNOS and 8-OHdGexpression. Cells Tissues Organs 2023:000532011. [PMID: 37517384 DOI: 10.1159/000532011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 07/05/2023] [Indexed: 08/01/2023] Open
Abstract
Every year, hundreds of thousands of cancer patients receive radiotherapy treatment. Oxidative stress is observed in healthy tissues due to irradiation exposure. The present study is the first to address the effects of Vaccinium myrtillus (whortleberry, WB) against the effects of x-ray irradiation on retinal tissue. Twenty-four Sprague-Dawley rats were randomly allocated into 4 groups: (1) control group: rats without any treatment, (2) x-ray irradiation group: 8 Gray (Gy) RT for 2 days, (3) 100 mg WB extract + x-ray irradiation group: 8 Gy irradiation for 2 days and followed by intraperitoneal (IP) WB extract (100 mg/kg) supplementation for 10 days, (4) 200 mg WB extract + x-ray irradiation group: 8 Gy irradiation for 2 days and followed by intraperitoneal (IP) WB extract (200 mg/kg) supplementation for 10 days. Eyes were enucleated on the 10th day after RT for histopathological, immunohistochemical (8-hydroxy deoxyguanosine (8-OHdG), endothelial nitric oxide synthase (eNOS), and biochemical analyses (glutathione peroxidase (GSH), and malondialdehyde (MDA). The GSH levels significantly decreased and MDA levels and 8-OHdG staining increased after x-ray irradiation compared to the control group. Combined x-ray irradiation +WB treatment significantly increased GSH levels and significantly decreased MDA production and 8-OHdG staining. However, eNOS staining was not affected in any of the groups. Besides, x-ray irradiation significantly increased cell losses and edematous areas. The WB significantly reversed the cellular damage in ganglion cells, inner nuclear, and outer nuclear layers in quantitative analyses. The x-ray irradiation caused significant retinal impairment, and additional WB therapy provided protective effects against radiation-induced retinopathy. These results may suggest WB extract as an adjuvant therapy to reverse retinal impairments after x-ray irradiation.
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Ozdemir A, Tumkaya L, Mercantepe T, Celik Samanci T, Uyan M, Kalcan S, Demiral G, Pergel A, Yilmaz Kutlu E, Kilic Yilmaz H. The protective effects of ginseng on x-irradiation-induced intestinal damage in rats. Radiat Environ Biophys 2023:10.1007/s00411-023-01039-y. [PMID: 37410120 DOI: 10.1007/s00411-023-01039-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 06/29/2023] [Indexed: 07/07/2023]
Abstract
Although radiotherapy is widely employed in the treatment of various malignancies in oncology patients, its use is limited by the toxic effects it causes in surrounding tissues, including the gastrointestinal system. Korean Red Ginseng (KRG) is a traditional drug reported to possess antioxidant and restorative properties in various studies. The purpose of the present study was to investigate the protective effects of KRG against radiation-associated small intestinal damage. Twenty-four male Sprague Dawley rats were randomly assigned into three groups. No procedure was performed on Group 1 (control) during the experiment, while Group 2 (x-irradiation) was exposed to radiation only. Group 3 (x-irradiation + ginseng) received ginseng via the intraperitoneal route for a week prior to x-irradiation. The rats were killed 24 h after radiation. Small intestinal tissues were evaluated using histochemical and biochemical methods. An increase in malondialdehyde (MDA) levels and a decrease in glutathione (GSH) were observed in the x-irradiation group compared to the control group. KRG caused a decrease in MDA and caspase-3 activity and an increase in GSH. Our findings show that it can prevent damage and apoptotic cell death caused by x-irradiation in intestinal tissue and can therefore play a protective role against intestinal injury in patients receiving radiotherapy.
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Affiliation(s)
- Ali Ozdemir
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Merkez, Box: 53020, Rize, Turkey.
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, 53010, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, 53010, Rize, Turkey
| | - Tugba Celik Samanci
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, 53010, Rize, Turkey
| | - Mikail Uyan
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Merkez, Box: 53020, Rize, Turkey
| | - Suleyman Kalcan
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Merkez, Box: 53020, Rize, Turkey
| | - Gokhan Demiral
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Merkez, Box: 53020, Rize, Turkey
| | - Ahmet Pergel
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Merkez, Box: 53020, Rize, Turkey
| | - Eda Yilmaz Kutlu
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, 53010, Rize, Turkey
| | - Hülya Kilic Yilmaz
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, 53010, Rize, Turkey
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Mercantepe F, Tumkaya L, Mercantepe T, Akyildiz K, Ciftel S, Yilmaz A. The Effects of Dexmedetomidine on Abdominal Aortic Occlusion-Induced Ovarian Injury via Oxidative Stress and Apoptosis. Cells Tissues Organs 2023; 212:554-566. [PMID: 37339613 DOI: 10.1159/000531613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 06/14/2023] [Indexed: 06/22/2023] Open
Abstract
Ischemia/reperfusion (I/R) induced ovarian damage is caused by various diseases such as ovarian torsion, ovarian transplantation, cardiovascular surgery, sepsis, or intra-abdominal surgery. I/R-related oxidative damage can impair ovarian functions, from oocyte maturation to fertilization. This study investigated the effects of dexmedetomidine (DEX), which has been shown to exhibit antiapoptotic, anti-inflammatory, and antioxidant effects, on ovarian I/R injury. We designed four study groups: group 1 (n = 6): control group; group 2 (n = 6): only DEX group; group 3 (n = 6): I/R group; group 4 (n = 6): I/R + DEX group. Then, ovarian samples were taken and examined histologically and immunohistochemically, and tissue malondialdehyde (MDA) and glutathione (GSH) levels were measured. In the I/R group MDA levels, caspase-3, NF-κB/p65, 8-OHdG positivity, and follicular degeneration, edema, and inflammation were increased compared to the control group (p = 0.000). In addition, GSH levels were significantly decreased in the I/R group compared to the control group (p = 0.000). On the other hand, in the I/R + DEX treatment group MDA levels, caspase-3, NF-κB/p65, 8-OHdG positivity, follicular degeneration, edema, and inflammation findings were decreased than in the I/R group (p = 0.000, p = 0.005, p = 0.005, p = 0.001, p = 0.005, respectively). However, GSH levels increased significantly in the I/R + DEX treatment group compared to the I/R group (p = 0.000). DEX protects against ovarian I/R injury through antioxidation and by suppressing inflammation and apoptosis.
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Affiliation(s)
- Filiz Mercantepe
- Department of Endocrinology and Metabolism Diseases, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Kerimali Akyildiz
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Serpil Ciftel
- Department of Endocrinology and Metabolism Diseases, Erzurum Regional Education and Research Hospital, Erzurum, Turkey
| | - Adnan Yilmaz
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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16
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Ergene S, Hemsinli D, Karakisi SO, Tumkaya L, Mercantepe T, Yılmaz A. Dexmedetomidine alleviates vacuolization and necrosis in tubular epithelial cells induced by aortic cross-clamping. Eur Rev Med Pharmacol Sci 2023; 27:3396-3405. [PMID: 37140289 DOI: 10.26355/eurrev_202304_32110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
OBJECTIVE Acute kidney injury (AKI) is one of the main causes of mortality in patients undergoing emergency surgery due to an abdominal aortic aneurysm. This study aimed to determine the potential nephroprotective characteristics of dexmedetomidine (DMD) for the establishment of a standard therapeutic method for AKI. MATERIALS AND METHODS Thirty Spraque Dawley rats were allocated to 4 groups: control, sham, ischemia-reperfusion, and ischemia/reperfusion (I/R)+dexmedatomidine. RESULTS Necrotic tubules, degenerative Bowman's capsule and vascular congestion were observed in the I/R group. In addition, there was an increase in tissue malondialdehyde (MDA), interleukin (IL)-1 and IL-6 levels in tubular epithelial cells. In contrast, we observed decreased tubular necrosis, IL-1, IL-6 and MDA levels in the DMD treatment group. CONCLUSIONS DMD has a nephroprotective effect against acute kidney injury resulting from I/R, which is related to aortic occlusion used in the treatment of ruptured abdominal aortic aneurysms.
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Affiliation(s)
- S Ergene
- Department of Cardiovascular Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey.
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17
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Saral S, Topçu A, Alkanat M, Mercantepe T, Şahin Z, Akyıldız K, Karataş KS, Yıldız L, Tümkaya L, Yazıcı ZA. Agomelatine attenuates cisplatin-induced cognitive impairment via modulation of BDNF/TrkB signaling in rat hippocampus. J Chem Neuroanat 2023; 130:102269. [PMID: 37001681 DOI: 10.1016/j.jchemneu.2023.102269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 03/24/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023]
Abstract
Cisplatin is a drug used effectively in the treatment of malignant tumors. However, cisplatin has many side effects, including cognitive impairment. Agomelatine, a synthetic melatonin analogue, is an important antidepressant. Increasing evidence has shown that agomelatine may be a potential neuroprotective agent. The aim of this study was to investigate the effect of agomelatine on learning and memory functions in cisplatin-induced cognitive impairment in a rat model. Male rats were administered agomelatine and cisplatin for 4 weeks. Neurobehavioral tests were performed at the end of the 4th week. After behavioral tests, rats were euthanized and BDNF, TNF, IL-1β, MDA and GSH levels were measured in hippocampal homegenates by ELISA. In addition, nNOS and TrkB receptor activity were measured immunohistochemically. The results showed that agomelatine significantly improved cognitive functions in spatial memory tests in rats with cisplatin-induced cognitive impairment. In addition, agomelatine treatment positively affected the discrimination index (DI). On the other hand, agomelatine treatment elevated cisplatin-suppressed hippocampal BDNF levels. Agomelatine treatment reduced cisplatin-induced neuroinflammation by suppressing TNF and IL-1β levels. Similarly, agomelatine reduced oxidative stress in the hippocampus. Histological findings showed that agomelatine treatment reduced pyramidal neuron damage in hippocampal DG, CA1 and CA3. Cisplatin increased nNOS and TrkB positivity in DG, CA1 and CA3 neurons compared to control. In contrast, agomelatine treatment decreased both nNOS and TrkB positive scores. These findings indicate that agomelatine reduces cisplatin-related cognitive impairment by exerting anti-inflammatory action and possibly by the modulation of the BDNF/TrkB/nNOS pathways in the hippocampus.
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Affiliation(s)
- Sinan Saral
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Physiology, Rize, Turkey.
| | - Atilla Topçu
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Pharmacology, Rize, Turkey
| | - Mehmet Alkanat
- Giresun University, Faculty of Medicine, Department of Physiology, Giresun, Turkey
| | - Tolga Mercantepe
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Histology and Embryology, Rize, Turkey
| | - Zafer Şahin
- Karadeniz Technical University, Faculty of Medicine, Department of Physiology, Trabzon, Turkey
| | - Kerimali Akyıldız
- Recep Tayyip Erdogan University, School of Healh Care Services Vocational, Department of Medical Services and Techniques, Rize, Turkey
| | - Kader Semra Karataş
- Kutahya Health Sciences of University, Faculty of Medicine, Department of Mental Health and Diseases, Kütahya, Turkey
| | - Lamiye Yıldız
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Physiology, Rize, Turkey
| | - Levent Tümkaya
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Histology and Embryology, Rize, Turkey
| | - Zihni Açar Yazıcı
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Microbiology, Rize, Turkey
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Mercantepe F, Tumkaya L, Mercantepe T, Rakici S. Histopathological evaluation of the effects of dexmedetomidine against pituitary damage ınduced by X-ray irradiation. Biomarkers 2023; 28:168-176. [PMID: 36453587 DOI: 10.1080/1354750x.2022.2154385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Background: The present study, aimed to investigate the potential negative effects of x-ray radiation and the effects of the α2-adrenergic receptor agonist dexmedetomidine on the pituitary gland.Methods: Twenty-four Sprague-Dawley rats were divided into three groups: Rats in Group 1 (control group). Group 2 (X-ray irradiation) and group 3 (X-ray irradiation + Dexmedetomidine) were given a total of 10 Gy external beam total body irradiation. Group 3 was given a single intraperitoneal dose of 200 µg/kg dexmedetomidine 30 minutes before RT.Results: In sections obtained from the x-ray irradiation group, we observed many necrotic in adenohypophysis and neurohypophysis. In addition, there were extensive oedematous areas and vascular congestions due to the necrotic cells in both the adenohypophysis and neurohypophysis. In contrast, we observed a reduction in necrotic chromophobic and chromophilic cells in adenohypophyseal tissue and a reduction in necrotic pituicytes in neurohypophyseal tissue in the dexmedetomidine treatment group. In addition, we determined lower caspase-3 and TUNEL expression in the dexmedetomidine treatment group compared with the x-ray irradiation group. Dexmedetomidine reduced x-ray radiation-induced pituitary damage by preventing apoptosis.Conclusions: The present study demonstrated the use of dexmedetomidine in situations related to radiation toxicity and offers the potential for a comprehensive study.
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Affiliation(s)
- Filiz Mercantepe
- Department of Endocrinology and Metabolism Diseases, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Sema Rakici
- Department of Radiation Oncology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Bahceci İ, Tumkaya L, Mercantepe T, Aslan N, Duran ÖF, Soztanaci US, Yazıcı ZA. Inhibition of methotrexate induced toxicity in the adult rat spleen by adalimumab. Drug Chem Toxicol 2023; 46:323-329. [PMID: 35057671 DOI: 10.1080/01480545.2022.2029880] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Methotrexate (MTX) has been in use for the treatment of rheumatoid arthritis (RA), psoriasis, and cancer since 1948. Its toxic side effects on tissues and organs have been well documented but splenotoxicity has not been addressed. This study set out to investigate this issue by examining the effectiveness of anti-TNFα agents against MTX-induced toxicity in T lymphocytes and macrophages via the regulation of CD3, CD68, and CD200R. Twenty-four Sprague Dawley rats were allocated to three groups: control (received saline solution only), MTX (20 mg/kg of single-dose of MTX), and Ada + MTX (single dose of 10 mg/kg Adalimumab before MTX administration). The spleens were removed 5 days after MTX administration. The number of CD3+/mm3cells for the control, MTX and Ada + MTX groups were, respectively, 2.69 ± 0.86, 20.51 ± 2.7, (p = 0.000) and 11.07 ± 2.01 (p = 0.000). The number of CD68+ macrophages/mm3 in the control, MTX and Ada + MTX groups were, respectively, 8.62 ± 1.08, 38.19 ± 1.37 (p = 0.000), and 16.87 ± 12.57 (p = 0.000). The number of macrophages that were CD200R+/mm3 in the control, MTX, and Ada + MTX groups were 3.33 ± 1.66, 25.77 ± 2.37 (p = 0.000), and 8.68 ± 2.66 (p = 0.000), respectively. We also observed that Ada reduced the numerical densities of these cells following MTX administration (p < 0.05). Ada may, therefore, be a promising candidate for the prevention of the deleterious effects on T lymphocytes and macrophages of MTX-induced toxicity.
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Affiliation(s)
- İlkay Bahceci
- Department of Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology & Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology & Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Nuray Aslan
- Department of Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ömer Faruk Duran
- Department of Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Umut Serkan Soztanaci
- Department of Anayomy, Hamidiye Faculty of Medicine, University of Health Sciences University, İstanbul, Turkey
| | - Zihni Acar Yazıcı
- Department of Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Ozdemir A, Topçu A, Mercantepe T, Arpa M, Mataracı Karakaş S, Ozdemir A, Tümkaya L, Mercantepe F. The effects of dexmedetomidine on early acute kidney injury in severely burned rats. Eur Rev Med Pharmacol Sci 2023; 27:1311-1321. [PMID: 36876698 DOI: 10.26355/eurrev_202302_31365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
OBJECTIVE Burns are a global medical and economic problem. In addition to high costs, the lengthy therapeutic process and the emotional trauma experienced by patients and their families indirectly worsen the socioeconomic damage caused. Kidney failure observed after burns is highly correlated with mortality. MATERIALS AND METHODS Twenty-eight male Sprague-Dawley rats (age four months, weight 250-350 g) were included in the study. They were randomly assigned into four groups consisting of seven rats each with similar mean weights. Group 1 (n=7) represented the healthy control group (C), Group 2 (n=7) the Sham+dexmedetomidine (DEX) 100 mcg/kg (three doses) (S+DEX100) group, Group 3 (n=7) the 30% Burn (B), and Group 4 (n=7) the 30% Burn+DEX 100 mcg/kg/day group (B+DEX100) (three doses). Thiobarbituric acid reactive substances (TBARS), total thiol (TT), interleukin-1 (IL-1) and tumor necrosis factor-α (TNF-α) values in kidney tissues were investigated biochemically, and histopathological analyses were also performed. Nuclear factor κB (NF-κB)/p65 was measured using immunohistochemistry, and the TUNEL assay was applied to indicate apoptotic tubular epithelial cells. RESULTS TBARS, IL-1, and TNF-α in kidney tissues decreased in the B+DEX100 group compared to the 30% burn group, while total thiol values increased. Histopathologically, atypical glomeruli, particularly necrotic tubules, and inflammation in peritubular areas decreased in the B+DEX100 group compared to the 30% burn group. In addition, apoptotic tubular epithelial cells exhibiting TUNEL positivity and tubular epithelial cells exhibiting NF-кβ/p65 positivity also decreased in the B+DEX100 group compared to the 30% burn group. CONCLUSIONS Dexmedetomidine reduced apoptotic activity in rats and exhibited anti-inflammatory antioxidant effects in the burn model in this study.
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Affiliation(s)
- A Ozdemir
- Department of Anesthesiology and Reanimation, Department of Pharmacology, Department of Histology and Embryology, Department of Medical Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey.
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Bahcecı I, Tumkaya L, Mercantepe T, Yılmaz H, Ibık YE, Duran OF, Arslan N. Effects of infliximab against carbon tetrachloride-induced spleen toxicity in rats. Eur Rev Med Pharmacol Sci 2023; 27:1140-1146. [PMID: 36808362 DOI: 10.26355/eurrev_202302_31220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE Carbon tetrachloride (CCl4) is a non-polar molecule used in industry in grain curing, insect-killing and especially in the production of chlorofluorocarbons. It is estimated that an average of 70,000 industry workers in Europe are exposed to this toxic compound. MATERIALS AND METHODS Twenty-four male Sprague-Dawley rats were randomly allocated into four groups: control group (saline only, Group I), infliximab (INF) group (Group II), CCl4 group (Group III) and CCl4+INF group (Group IV). RESULTS While there was an increase in the numerical density of CD3, CD68, and CD200R positive T lymphocytes and macrophages in the CCl4 administration group (p=0.000), this was not the case in the CCl4+INF administration group (p=0.000). CONCLUSIONS TNF-α inhibitors have a protective effect against CCl4-induced spleen toxicity/inflammation as seen by the reduction in CD3, CD68, CD200R positive T lymphocytes and macrophages.
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Affiliation(s)
- I Bahcecı
- Department of Medical Microbiology, Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey.
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Abstract
Acute kidney injury (AKI) is observed in nearly 60% of patients undergoing cisplatin (CP) therapy. The aim of this study was to reveal the potential effects of apelin-13 (AP-13) in the prevention of CP-induced renal toxicity, together with its antioxidant and anti-inflammatory effect mechanisms. Four experimental groups were established. Group 1, the control group, received 0.9% saline solution alone intraperitoneally (IP). Group 2, the CP group, received CP IP at 5 mg/kg once weekly for four weeks for induction of nephrotoxicity. In Group 3, the CP + Apelin-13 (AP-13) group, AP-13 was prepared at 20 nmol kg/d in sterile pyrogen-free saline before injection every day for four weeks and administered IP. CP was administered IP at 5 mg/kg once weekly for four weeks for induction of nephrotoxicity. In Group 4, the AP-13 group, AP-13 was prepared at 20 nmol kg/d in sterile pyrogen-free 0.9% saline before injection every day for four weeks and administered IP. Thiobarbituric acid reactive substances (TBARS), thiol (-SH), interleukin-1 beta, cleaved caspase-3, 8-hydroxy 2-deoxyguanosine (8-OHdG), and nuclear factor kappa B (NF-κβ/p65) levels were then measured. Increased oxidative stress, inflammation, and apoptosis as a result of CP application activated the cascade. However, AP-13 administration reduced the oxidative stress increased by CIS with the determined antioxidant effect and reduced the damage by increasing total -SH levels. 8-OHdG and NF-κβ/p65, which were up-regulated by triggering oxidative stress and inflammation, were down-regulated through the antioxidant and anti-inflammatory effects of AP-13.
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Affiliation(s)
- Atilla Topcu
- Department of Pharmacology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Sinan Saral
- Department of Physiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Kerimali Akyildiz
- Department of Medical Services and Techniques, Health Care Services Vocational School, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yilmaz
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Dil E, Tumkaya L, Mercantepe T, Rakici S, Yilmaz A, Celik Samanci T, Yazici ZA. Radioprotective effects of dexmedetomidine on X-ray-induced testicular damage. Eur Rev Med Pharmacol Sci 2023; 27:673-680. [PMID: 36734735 DOI: 10.26355/eurrev_202301_31069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Approximately 70% of cancer patients require radiotherapy. However, despite its effectiveness in the treatment of cancer, radiotherapy can also affect and damage surrounding healthy tissues in addition to tumorous tissues. Since testicular tissues are highly radiosensitive, radiotherapy can cause impairments in spermatogenesis leading to infertility. The purpose of this study was to examine the potential radio-protective effect of dexmedetomidine (Dex), an α2-adrenoceptor agonist, on oxidative stress and apoptosis in testicular tissues caused by x-irradiation in rats. MATERIALS AND METHODS Thirty male Sprague-Dawley rats were allocated into three groups of ten (n=10): control, irradiation (IR), and IR + Dex groups. The IR group was exposed to a single dose of 2 Gy IR. The IR+Dex group was given a single intraperitoneal (i.p.) dose of 100 µg/kg Dex before IR. The control group received a single dose of saline solution i.p. Testicular tissues removed 24 hours after IR were subjected to histochemical, biochemical, and immunohistochemical analysis. RESULTS IR resulted in increased malondialdehyde (MDA) activity and significant changes in testis tissues. However, the application of Dex elevated glutathione levels by preventing MDA formation. In addition, Dex decreased tubular epithelial apoptosis via elevated Cleaved Caspase-3 expressions. CONCLUSIONS Dex exhibited a radio-protective effect against lipid peroxidation and apoptosis caused by IR.
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Affiliation(s)
- E Dil
- Department of Urology, Department of Histology and Embryology, Department of Radiation Oncology, Department of Biochemistry, Department of Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey.
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24
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Batcik Ş, Tumkaya L, Mercantepe T, Atak M, Topcu A, Uydu HA, Mercantepe F. The nephroprotective effect of amifostine in a cecal ligation-induced sepsis model in terms of oxidative stress and inflammation. Eur Rev Med Pharmacol Sci 2022; 26:9144-9156. [PMID: 36591826 DOI: 10.26355/eurrev_202212_30664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE Sepsis is responsible for more than 5 million deaths worldwide every year. The purpose of this study was to use amifostine to reduce acute kidney injury developing as a result of sepsis. MATERIALS AND METHODS Thirty Sprague Dawley rats were divided into three equal groups - a healthy control group (Group 1), cecal ligation and puncture group (CLP, Group 2), and a CLP + amifostine (AMF) group receiving a total of 200 mg/kg AMF intraperitoneally (i.p.) 15 min before sepsis induction (Group 3). RESULTS Total thiol levels decreased while malondialdehyde (MDA), tumor necrosis factor-α (TNF-α), nuclear factor kappa B (NF-κB/p65), and interleukin (IL)-1β, and IL-6 levels increased in the CLP group. We also observed degeneration in renal corpuscles, necrotic tubules, polymorphonuclear leukocyte inflammation, and vascular congestion. In the amifostine group, total thiol levels in tissue increased, while MDA, TNF-α, NF-кB/p65, IL-1β, and IL-6 levels, necrotic renal tubules, and inflammation decreased. CONCLUSIONS Amifostine prevented sepsis-related acute kidney injury by reducing inflammation and oxidative stress.
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Affiliation(s)
- Ş Batcik
- Department of Anesthesia and Reanimation, Department of Histology and Embryology, Department of Biochemistry, Department of Pharmacology, Department of Endocrine and Metabolism Diseases, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey.
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25
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Hemsinli D, Tumkaya L, Ergene S, Karakisi SO, Mercantepe T, Yilmaz A. Dexmedetomidine attenuates pneumocyte apoptosis and inflammation induced by aortic ischemia-reperfusion injury. Clin Exp Hypertens 2022; 44:595-600. [PMID: 35787727 DOI: 10.1080/10641963.2022.2093893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE Despite significant improvements in interventional vascular aneurysm repair procedures and intensive care patient management, there has been no significant decrease in mortality due to ruptured abdominal aortic aneurysm. Oxidative stress is known to play a key role in secondary organ damage due to infrarenal aortic clamping. The aim of this study was to examine the potential protective effect of the alpha-2 adrenergic receptor agonist dexmedetomidine (DMT) on aortic occlusion-induced lung injury. METHODS Thirty Sprague Dawley rats were allocated into control, ischemia-reperfusion (IR), and IR+DMT groups randomly. Vascular clamps were attached to the abdominal aorta in the IR and IR+DMT groups. Two-hour reperfusion was established 1 h after ischemia. The IR+DMT group received a single intraperitoneal 100 µg dose of DMT 30 min before infrarenal abdominal aortic clamping. RESULTS IR due to aortic occlusion led to apoptosis, widespread inflammation, alveolar septal wall thickening due to bleeding and vascular congestion were observed in both types I and II pneumocytes. Malondialdehyde levels increased while glutathione decreased. However, DMT was found to lower apoptotic pneumocytes, alveolar-septal thickness, hemorrhage, vascular congestion, and malondialdehyde levels, while glutathione levels in lung tissue increased. CONCLUSIONS This study is the first to address the effects of DMT on the lung in a ruptured abdominal aortic aneurysm model. Our findings suggest that the alpha-2 adrenergic receptor agonist DMT reduces oxidative stress and apoptosis, thus protecting against aortic occlusion-induced pulmonary injury.
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Affiliation(s)
- Dogus Hemsinli
- Faculty of Medicine, Department of Cardiovascular Surgery, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Faculty of Medicine, Department of Histology and Embryology, Recep Tayyip Erdogan University, Rize, Turkey
| | - Saban Ergene
- Faculty of Medicine, Department of Cardiovascular Surgery, Recep Tayyip Erdogan University, Rize, Turkey
| | - S Ozan Karakisi
- Faculty of Medicine, Department of Cardiovascular Surgery, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Faculty of Medicine, Department of Histology and Embryology, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yilmaz
- Faculty of Medicine, Department of Medical Biochemistry, Recep Tayyip Erdogan University, Rize, Turkey
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26
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Beyazal Çeliker F, Tümkaya L, Suzan ZT, Topcu A, Mercantepe T, Çinar S, Yazici ZA, Yılmaz A. Effects of gadodiamide and gadoteric acid on lung tissue: A comparative study. J Biochem Mol Toxicol 2022; 36:e23133. [PMID: 35686328 DOI: 10.1002/jbt.23133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/16/2022] [Accepted: 05/30/2022] [Indexed: 11/09/2022]
Abstract
We set out to investigate the effects of gadodiamide and gadoteric acid, used for magnetic resonance imaging, on the lungs. In this study, 32 male Sprague Dawley rats were used. These were allocated into four groups; The first group (control) was untreated. The second group received isotonic saline on the first and fourth days of the week for 5 weeks. Following the same schedule, the third and fourth groups received a total of 2 mg/kg gadodiamide and gadoteric acid, respectively, in place of saline. The alveolar Wall thickness was evaluated. Gadodiamide and gadoteric acid significantly increased the numbers of collagen-3 and caspase-3 positive cells in the lung tissue (p < 0.05). In addition, these two substances increased the alveolar Wall thickness (p < 0.05). Furthermore, they increased the levels of malondialdehyde and glutathione (p < 0.05). This study demonstrates that both linear and macrocyclic contrast agents are toxic for the lungs in rats.
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Affiliation(s)
- Fatma Beyazal Çeliker
- Departments of Radiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tümkaya
- Departments of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Zehra T Suzan
- Departments of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Atilla Topcu
- Departments of Pharmacology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Departments of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Seda Çinar
- Departments of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Zihni A Yazici
- Departments of Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yılmaz
- Departments of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Tümkaya L, Bas O, Mercantepe T, Cınar S, Özgür A, Yazici ZA. Effect of the prenatal electromagnetic field exposure on cochlear nucleus neurons and oligodendrocytes in rats. Environ Sci Pollut Res Int 2022; 29:40123-40130. [PMID: 35112244 DOI: 10.1007/s11356-021-18325-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 12/21/2021] [Indexed: 06/14/2023]
Abstract
Electromagnetic radiation from elecromagnetic field (EMF) sources has been an important health concern for a long time. The vast majority of this exposure is due to the widespread use of mobile phones, an important source of the EMF. The EMF generated by mobile phones may have adverse effects on the various biological structures that regulate the body system and function. In this study, it was aimed to evaluate histopathologically the effects of 900-megahertz (MHz) EMF application in the prenatal period on the development of the ventral cochlear nucleus, which is the first place of hearing in the brainstem, at various time points of the postnatal period in rats. In the study, Sprague-Dawley pregnant rats were divided randomly into two groups as the control group and the EMF group. The rats in the EMF group were exposed to a 900-MHz EMF every day until birth, while no EMF was applied to the rats in the control group. Auditory brainstem responses of both groups were recorded on the postnatal 13th day, the day the hearing starts. Newborn rats were sacrificed by anesthesia on days 7, 10, 15, and 30. Contrary to the control group, structural damage in cochlear nuclear neurons and oligodendrocyte cell structures and increased caspase-3 activity were observed in the postnatal period in the EMF groups. However, no significant difference was observed between the groups in terms of structural damage and caspase-3 activity at different stages of the postnatal period when cochlear nucleus development was observed. According to ABS, there was no significant difference between the average latency of waves in both groups. In conclusion, this study shows that 900-MHz electromagnetic waves propagated from mobile phones during the prenatal period have no harmful effects on the development of the ventral cochlear nucleus of rats.
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Affiliation(s)
- Levent Tümkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Merkez, Box: 53020, Rize, Turkey.
| | - Orhan Bas
- Department of Anatomy, Faculty of Medicine, Samsun University, Samsun, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Merkez, Box: 53020, Rize, Turkey
| | - Seda Cınar
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Merkez, Box: 53020, Rize, Turkey
| | - Abdulkadir Özgür
- Department of Otorhinolaryngology, Samsun Ondokuz Mayis University, Samsun, Turkey
| | - Zihni Acar Yazici
- Department of Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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28
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Safak G, Celiker M, Tümkaya L, Mercantepe T, Rakici S, Cinar S, Yilmaz A, Terzi S, Demir E, Celebi Erdivanlı O, Ozergin Coşkun Z, Karakaş S, Birinci M, Dursun E. Comparison of effects of dexmedetomidine and amifostine against X-ray radiation-induced parotid damage. Radiat Environ Biophys 2022; 61:241-253. [PMID: 35147734 DOI: 10.1007/s00411-022-00964-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
Radiotherapy can be employed as a therapeutic modality alone in the early stages of cancer and is used together with other treatments such as surgery and chemotherapy in more advanced stages. However, exposure to ionizing radiation in association with radiotherapy affects several organs in the head and neck and can give rise to early and late side effects. Exposure to ionizing radiation used in radiotherapy is known to cause cell damage by leading to oxygen stress through the production of free oxygen radicals (such as superoxide radicals, hydroxyl radical, hydrogen peroxide, and singlet oxygen), depending on the total radiation dosage, the fractionation rate, radiosensitivity, and linear energy transfer. The purpose of the present study was to determine the potential protective role of a powerful and highly selective α2-adrenoreceptor agonist with a broad pharmacological spectrum against salivary gland damage induced by ionizing radiation exposure. Forty Sprague-Dawley rats were divided into five groups-control, ionizing radiation, ionizing radiation + dexmedetomidine (100 µg/kg), ionizing radiation + dexmedetomidine (200 µg/kg), and ionizing radiation + amifostine (200 mg/kg). Following exposure to ionizing radiation, we observed necrosis, fibrosis, and vascular congestions in parotid gland epithelial cells. We also observed increases in malondialdehyde (MDA) and cleaved Caspase-3 levels and a decrease in glutathione (GSH). In groups receiving dexmedetomidine, we observed necrotic epithelial cells, fibrosis and vascular congestion in parotid gland tissue, a decrease in MDA levels, and an increase in GSH. Dexmedetomidine may be a promising antioxidant agent for the prevention of oxidative damage following radiation exposure.
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Affiliation(s)
- Gökhan Safak
- Department of Otolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, İki nolu sehitler caddesi, Rize, 53010, Turkey.
| | - Metin Celiker
- Department of Otolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, İki nolu sehitler caddesi, Rize, 53010, Turkey
| | - Levent Tümkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
| | - Sema Rakici
- Department of Radiation Oncology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
| | - Seda Cinar
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
| | - Adnan Yilmaz
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
| | - Suat Terzi
- Department of Otolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, İki nolu sehitler caddesi, Rize, 53010, Turkey
| | - Emine Demir
- Department of Otolaryngology, Faculty of Medicine, Altınbas University, Rize, 34000, Turkey
| | - Ozlem Celebi Erdivanlı
- Department of Otolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, İki nolu sehitler caddesi, Rize, 53010, Turkey
| | - Zerrin Ozergin Coşkun
- Department of Otolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, İki nolu sehitler caddesi, Rize, 53010, Turkey
| | - Sibel Karakaş
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, 53010, Turkey
| | - Mehmet Birinci
- Departments of Otolaryngology, Of State Hospital, Trabzon, 61000, Turkey
| | - Engin Dursun
- Department of Otolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, İki nolu sehitler caddesi, Rize, 53010, Turkey
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Topcu A, Kostakoglu U, Mercantepe T, Yilmaz HK, Tumkaya L, Uydu HA. The cardioprotective effects of perindopril in a model of polymicrobial sepsis: The role of radical oxygen species and the inflammation pathway. J Biochem Mol Toxicol 2022; 36:e23080. [PMID: 35417068 DOI: 10.1002/jbt.23080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 01/21/2022] [Accepted: 04/01/2022] [Indexed: 11/11/2022]
Abstract
Mortality rates associated with myocardial dysfunction due to sepsis and septic shock are generally high across the world. The present study focused on the antioxidant and anti-inflammatory effects of perindopril (PER) for the purpose of preventing the adverse effects of sepsis on the myocardium and developing new alternatives in treatment. The control group received only saline solution via the oral route for 4 days. The second group underwent cecal ligation puncture (CLP), and the third underwent CLP and received PER (2 mg/kg). Rats in the third group received 2 mg/kg PER per oral (p.o.) from 4 days before induction of sepsis. Thiobarbituric acid reactive species (TBARS), total thiol (-SH), interleukin-1 beta (IL-1β), IL-6, 8-hydroxy-2'-deoxyguanosine (8-OHdG), and nuclear factor kappa B (NF-κB/p65) levels increased in the CLP groups. In contrast, PER (2 mg/kg) decreased the levels of biochemical parameters other than total-SH and decreased 8-OHdG, NF-κB/p65 immunopositivity in rat heart tissues. The data from this study show that impairment of the oxidant/antioxidant balance and inflammatory cytokine levels in favor of inflammation in heart tissue under septic conditions results in severe tissue damage. PER administration before sepsis was shown to exhibit antioxidant and anti-inflammatory properties by reducing these effects. This in turn increased the importance of PER as new evidence of its protective effects in heart tissue.
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Affiliation(s)
- Atilla Topcu
- Department of Pharmacology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ugur Kostakoglu
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Hulya K Yilmaz
- Department of Medical Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Huseyin A Uydu
- Department of Medical Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Ozdemir A, Tumkaya L, Kalcan S, Uyan M, Karakaya A, Demiral G, Celik Samanci T, Mercantepe T, Cumhur Cüre M, Cüre E. The effects of TNF-α inhibitors on carbon tetrachloride-induced nephrotoxicity. Clin Exp Hypertens 2022; 44:291-296. [PMID: 34964416 DOI: 10.1080/10641963.2021.2018600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Carbon tetrachloride (CCl4), employed in various industrial fields, can cause acute damage in renal tissues. This study investigated the therapeutic effect of the TNF-alpha inhibitor Infliximab on TGF-ß and apoptosis caused by acute kidney image induced by CCl4. METHODS Twenty-four male Sprague-Dawley rats were assigned into control, CCl4, and CCl4+ Infliximab groups. The control group received an isotonic saline solution, and the CCl4 group 2 mL/kg CCl4 intraperitoneally (i.p). The CCl4+ Infliximab group was given 7 mg/kg Infliximab 24 hours after administration of 2 mL/kg CCl4. Kidney tissues were removed at the end of the experiment and subjected to histopathological and biochemical analysis. RESULTS The application of CCl4 led to tubular necrosis, inflammation, vascular congestion, and increased Serum BUN and creatinine values. An increase in caspase-3 activity also occurred in the CCl4 group. However, Infliximab exhibited an ameliorating effect on kidney injury by causing a decrease in the number of apoptotic cells. Tissue ADA and TGF-ß values of the CCL4 group were significantly higher than the values of the control group (p = .001, p < .001 respectively) and CCL4+ Inf group (p = .004, p = .015, respectively). CONCLUSIONS This study shows that Infliximab ameliorates nephrotoxicity by reducing lipid peroxidation, oxidative stress, and apoptosis in acute kidney damage developing in association with CCl4 administration. These findings are promising in terms of the ameliorating role of TNF-alpha inhibitors in acute kidney injury.
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Affiliation(s)
- Ali Ozdemir
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Suleyman Kalcan
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Mikail Uyan
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ahmet Karakaya
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Gokhan Demiral
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tugba Celik Samanci
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | | | - Erkan Cüre
- Department of Internal Medicine, Ethica Incirli Hospital, İstanbul, Rize, Turkey
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Ozdemir A, Tumkaya L, Kalcan S, Uyan M, Karakaya A, Demiral G, Celik Samanci T, Mercantepe T, Cumhur Cüre M, Cüre E. The effects of TNF-α inhibitors on carbon tetrachloride-induced nephrotoxicity. Clin Exp Hypertens 2022. [PMID: 34964416 DOI: 10.1080/10641963.2021.2018600.] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 09/30/2022]
Abstract
OBJECTIVES Carbon tetrachloride (CCl4), employed in various industrial fields, can cause acute damage in renal tissues. This study investigated the therapeutic effect of the TNF-alpha inhibitor Infliximab on TGF-ß and apoptosis caused by acute kidney image induced by CCl4. METHODS Twenty-four male Sprague-Dawley rats were assigned into control, CCl4, and CCl4+ Infliximab groups. The control group received an isotonic saline solution, and the CCl4 group 2 mL/kg CCl4 intraperitoneally (i.p). The CCl4+ Infliximab group was given 7 mg/kg Infliximab 24 hours after administration of 2 mL/kg CCl4. Kidney tissues were removed at the end of the experiment and subjected to histopathological and biochemical analysis. RESULTS The application of CCl4 led to tubular necrosis, inflammation, vascular congestion, and increased Serum BUN and creatinine values. An increase in caspase-3 activity also occurred in the CCl4 group. However, Infliximab exhibited an ameliorating effect on kidney injury by causing a decrease in the number of apoptotic cells. Tissue ADA and TGF-ß values of the CCL4 group were significantly higher than the values of the control group (p = .001, p < .001 respectively) and CCL4+ Inf group (p = .004, p = .015, respectively). CONCLUSIONS This study shows that Infliximab ameliorates nephrotoxicity by reducing lipid peroxidation, oxidative stress, and apoptosis in acute kidney damage developing in association with CCl4 administration. These findings are promising in terms of the ameliorating role of TNF-alpha inhibitors in acute kidney injury.
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Affiliation(s)
- Ali Ozdemir
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Suleyman Kalcan
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Mikail Uyan
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ahmet Karakaya
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Gokhan Demiral
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tugba Celik Samanci
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | | | - Erkan Cüre
- Department of Internal Medicine, Ethica Incirli Hospital, İstanbul, Rize, Turkey
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Manti N, Guvercin Y, Mercantepe T, Tumkaya L, Balik MS. Clinical and Histologic Evaluation of Partial Achilles Tendon Injury Repair with Amniotic Membrane in Rats. J Am Podiatr Med Assoc 2022; 112:20-055. [PMID: 35324463 DOI: 10.7547/20-055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Adhesions after tendinopathy in individuals who perform physical work and those physically active in middle age are a challenging problem for orthopedic surgeons. We evaluated the effects of human-derivated amniotic membrane on tendon healing, adhesions, angiogenesis, and the inflammatory process. METHODS Thirty-five rats were divided evenly into five groups, and the left lower extremity was used in this study. No interventions were applied to the control group (group 5). In the other groups, Achilles tendons were partially cut to the midline. Then, primary repair (group 1), amniotic membrane treatment with no repair (group 2), primary repair and amniotic membrane treatment (group 3), or secondary healing with no repair (group 4) was performed. RESULTS Use of amniotic membrane in tendon healing resulted in decreased adhesion formation and positive effects on collagen sequencing and anti-inflammatory effects. In addition, for the vascular endothelial growth factor evaluation there was no difference among the amniotic membrane repair groups, but there was an increase in vascular endothelial growth factor positivity compared with the control group. CONCLUSIONS These data show that amniotic membrane treatment can alter biological behavior and induce surface-dependent angiogenesis and can have angiogenetic effects on ischemia and inflammation.
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Affiliation(s)
- Nurettin Manti
- *Department of Orthopedics and Traumatology, Ankara City Hospital-Neurology Orthopaedic Hospital, Ankara, Turkey
| | - Yilmaz Guvercin
- †Department of Orthopedics and Traumatology, Recep Tayyip Erdoğan University Medical School, Rize, Turkey
| | - Tolga Mercantepe
- ‡Department of Histology and Embryology Recep Tayyip Erdoğan University Medical School, Rize, Turkey
| | - Levent Tumkaya
- ‡Department of Histology and Embryology Recep Tayyip Erdoğan University Medical School, Rize, Turkey
| | - Mehmet Sabri Balik
- †Department of Orthopedics and Traumatology, Recep Tayyip Erdoğan University Medical School, Rize, Turkey
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Beyazal Celiker F, Tümkaya L, Mercantepe T, Zengin E, Beyazal M, Turan A, Beyazal Polat H, Topal Suzan Z, Yılmaz A. The effects of long-term doppler ultrasound exposure in the prenatal period on renal tissue physiology in rats. Electromagn Biol Med 2022; 41:121-128. [DOI: 10.1080/15368378.2022.2028633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Fatma Beyazal Celiker
- Department of Radiology, Faculty of Medicine, University of Recep Tayyip Erdogan, Rize, Turkey
| | - Levent Tümkaya
- Department of Histology and Embryology, Faculty of Medicine, University of Recep Tayyip Erdogan, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, University of Recep Tayyip Erdogan, Rize, Turkey
| | - Ertan Zengin
- Department of Radiology, Faculty of Medicine, University of Recep Tayyip Erdogan, Rize, Turkey
| | - Mehmet Beyazal
- Department of Radiology, Faculty of Medicine, University of Recep Tayyip Erdogan, Rize, Turkey
| | - Arzu Turan
- Department of Radiology, Faculty of Medicine, University of Recep Tayyip Erdogan, Rize, Turkey
| | - Hatice Beyazal Polat
- Department of Internal Medicine, Faculty of Medicine, University of Recep Tayyip Erdogan, Rize, Turkey
| | - Zehra Topal Suzan
- Department of Histology and Embryology, Faculty of Medicine, University of Recep Tayyip Erdogan, Rize, Turkey
| | - Adnan Yılmaz
- Department of Biochemistry, Faculty of Medicine, University of Recep Tayyip Erdogan, Rize, Turkey
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Yilmaz H, Karakoc Y, Tumkaya L, Mercantepe T, Sevinc H, Yilmaz A, Yılmaz Rakıcı S. The protective effects of red ginseng and amifostine against renal damage caused by ionizing radiation. Hum Exp Toxicol 2022; 41:9603271221143029. [DOI: 10.1177/09603271221143029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
This study aimed to elucidate the effects of amifostine (ethyol) (AM), a synthetic radioprotector, and red ginseng (RG), a natural radioprotective agent, against the toxic effect of ionizing radiation (IR) on kidney tissues through changes in biochemical and histopathological parameters in addition to contributions to the use of amifostine and RG in clinical studies . Five groups were established: Group I (control, receiving only saline by gavage), Group II (IR only), and Group III (IR+AM, 200 mg/kg intraperitoneally (i.p.). Group IV (IR + RG, 200 mg/kg orally once a day for 4 weeks), and Group V (IR+RG+AM, 200 mg/kg orally once/day for 4 weeks before IR and 200 mg/kg AM administered (i.p.) 30 min before IR). All groups, except for the control group, were subject to 6-Gy whole-body IR in a single fraction. 24 h after irradiation, all animals were sacrificed under anesthesia. IR enhanced MDA, 8-OHdG, and caspase-3 expression while decreasing renal tissue GSH levels ( p < .05). Significant numbers of necrotic tubules together with diffuse vacuolization in proximal and distal tubule epithelial cells were also observed. The examination also revealed substantial brush boundary loss in proximal tubules as well as relatively unusual glomerular structures. While GSH levels significantly increased in the AM, RG, and AM+RG groups, a decrease in KHDS, MDA, 8-OHdG, and caspase-3 expression was observed, compared to the group subject to IR only ( p < .05). Therefore, reactive oxygen species-scavenging antioxidants may represent a promising treatment for avoiding kidney damage in patients receiving radiation.
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Affiliation(s)
- Hamit Yilmaz
- Department of Biophysics, Faculty of Medicine, University of Health Sciences, Istanbul, Turkey
| | - Yunus Karakoc
- Department of Biophysics, Faculty of Medicine, University of Health Sciences, Istanbul, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University Rize, Turkey
| | - Hacer Sevinc
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University Rize, Turkey
| | - Adnan Yilmaz
- Department of Medical Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University Rize, Turkey
| | - Sema Yılmaz Rakıcı
- Department of Radiation Oncology, Faculty of Medicine, Recep Tayyip Erdogan University Rize, Turkey
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Erdivanli B, Ozdemir A, Sen A, Mercantepe T, Kazdal H, Uydu HA, Tumkaya L. Protective effect of thymoquinone in preventing trauma-related damage: an experimental study. Biomarkers 2021; 27:95-100. [PMID: 34890510 DOI: 10.1080/1354750x.2021.2016972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Secondary injury is a potentially modifiable factor of outcome in traumatic brain injury. This study aimed to investigate thymoquinone's effects on trauma-induced neuronal damage. METHODS Eighteen adult female Sprague-Dawley rats were assigned into three groups following ketamine and xylazine anaesthesia (n = 6): Control, Trauma, Trauma + Thymoquinone. First dose of thymoquinone was administered three hours after the trauma. RESULTS The trauma group showed significant oedema, vascular congestion, and ischaemia. Also, caspase-3 activity and malondialdehyde content of brain tissue was significantly increased, and Na,K-ATPase activity and glutathione levels were significantly reduced. Thymoquinone significantly reduced oedema, vascular congestion, ischaemia, and caspase-3 activity compared with the trauma group. While Na,K-ATPase activity and glutathione levels was similar to the Control group, malondialdehyde content was similar to the trauma group. CONCLUSIONS This study showed that low dose thymoquinone exhibited a neuroprotective effect following severe traumatic brain injury, if administered within three hours of injury. Similar levels of glutathione and malondialdehyde suggest no antioxidant effect. Significant reduction in oedema and ischaemia in the neuron cells and partially preserved activity of Na,K-ATPase suggest that thymoquinone protects mitochondrial functions and energy levels of the neuronal cells following severe traumatic brain injury.
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Affiliation(s)
- Basar Erdivanli
- Department of Anesthesiology and Reanimation, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Abdullah Ozdemir
- Department of Anesthesiology and Reanimation, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ahmet Sen
- Department of Anesthesiology and Reanimation, Faculty of Medicine, Samsun Education and Training Hospital, Samsun, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Hizir Kazdal
- Department of Anesthesiology and Reanimation, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Huseyin Avni Uydu
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Kartal S, Şen A, Tümkaya L, Erdivanlı B, Mercantepe T, Yılmaz A. The effect of dexmedetomidine on liver injury secondary to lower extremity ischemia-reperfusion in a diabetic rat model. Clin Exp Hypertens 2021; 43:677-682. [PMID: 34109906 DOI: 10.1080/10641963.2021.1937204] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Introduction: In this study, we aimed to evaluate the hepatic protective effects of dexmedetomidine in the lower extremity ischemia-reperfusion model in diabetic rats biochemically and histopathologically.Methods: Rats were randomly divided into 4 equal groups (n = 6); Control (C) group, diabetic control group (DM), diabetic ischemia-reperfusion group (IR), group with diabetic IR and dexmedetomidine (DEX). In the IR and DEX groups were performed 120 min reperfusion after 120 min ischemia. In group DEX, 100 µ / kg dexmedetomidine was administered intraperitoneally 30 minutes before renal IR administration. Then, various histopathological and biochemical parameters were evaluated in liver tissue.Results: After ischemia-reperfusion, aspartate amino transaminase, alanine amino transaminase, total oxidant level, and thiobarbituric acid -reactive substances were increased, total thiol group and total antioxidant level were decreased and these parameters were found to improve in the group given dexmedetomidine. It was also observed that there was histopathological deterioration after ischemia-reperfusion and histopathological deterioration was found to be less with dexmedetomidine administration.Conclusion: The effects of lower extremity ischemia-reperfusion on hepatic tissue as distant organs were evaluated in diabetic rats, histopathologically, immunologically, biochemically, and liver damage was determined after ischemia-reperfusion, and dexmedetomidine was found to decrease liver damage.
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Affiliation(s)
- Seyfi Kartal
- Department of Anesthesiology and Reanimation, Trabzon Kanuni Training and Research Hospital, University of Healthy Sciences, Trabzon, Turkey
| | - Ahmet Şen
- Department of Anesthesiology and Reanimation, Trabzon Kanuni Training and Research Hospital, University of Healthy Sciences, Trabzon, Turkey
| | - Levent Tümkaya
- Department of Medical Sciences Histology Embryology, Faculty of Medicine, University of Recep Tayyip Erdoğan, Rize, Turkey
| | - Basar Erdivanlı
- Department of Anesthesiology and Reanimation, Faculty of Medicine, University of Recep Tayyip Erdoğan, Rize, Turkey
| | - Tolga Mercantepe
- Department of Medical Sciences Histology Embryology, Faculty of Medicine, University of Recep Tayyip Erdoğan, Rize, Turkey
| | - Adnan Yılmaz
- Department of Basic Sciences Biochemistry, Faculty of Medicine, University of Recep Tayyip Erdoğan, Rize, Turkey
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Kose O, Altin A, Kurt Bayrakdar S, Bostan SA, Mercantepe T, Akyildiz K, Tumkaya L, Yilmaz A, Kose S, Yemenoglu H, Turker Sener L, Kuluslu G. Influences of periodontitis on hippocampal inflammation, oxidative stress, and apoptosis in rats. J Periodontal Res 2021; 56:1154-1162. [PMID: 34486732 DOI: 10.1111/jre.12929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 08/26/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND AIM The hippocampus, which has a central role in cognitive and behavioral activities, is one of the most sensitive parts of the brain to systemic inflammatory diseases. This animal study aims to comprehensively investigate the possible inflammatory, oxidative, and apoptotic effects of periodontitis on the hippocampus. METHODS Sixteen male Sprague-Dawley rats were randomly assigned to two groups: control and experimental periodontitis (Ep). In the Ep group, periodontitis was induced by placing 3.0 sutures sub-paramarginally around the necks of right and left mandibular first molars and maintaining the ligatures in place for 5 weeks. Following the euthanasia, mandibula and hippocampus samples were collected bilaterally. Alveolar bone loss was measured histomorphometrically and radiologically on the right and left mandibles. On the right hippocampal sections histological (Caspase-3, TNF-α, and 8-OHdG) and the left hippocampal sections, biochemical (IL-1β, Aβ1-42 , MDA, GSH, and TAS levels) evaluations were performed. RESULTS Histopathological changes associated with periodontitis were limited (p > .05). A slight increase in caspase-3 positive neuron density in EP rats showed that apoptotic changes were also limited (p > .05). 8-OHdG activity, on the other hand, was significantly higher compared to controls (p < .05). In biochemical analysis, there was a significant increase in IL-1β levels and oxidative membrane damage (MDA) (p < .05) whereas Aβ1-42 and antioxidant marker (GSH and TAS) levels were slightly increased (p > .05). CONCLUSION Periodontitis causes marked increases in IL-1β levels and oxidative stress in the hippocampus, but limited degenerative and apoptotic changes.
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Affiliation(s)
- Oğuz Kose
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ahmet Altin
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Sevda Kurt Bayrakdar
- Department of Periodontology, School of Dentistry, Eskişehir Osmangazi University, Eskisehir, Turkey
| | - Semih Alperen Bostan
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Kerimali Akyildiz
- Department of Medical Services and Techniques, School of Health Care Services Vocational, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yilmaz
- Department of Biochemistry, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Sefanur Kose
- Department of Psychiatry, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Hatice Yemenoglu
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Leyla Turker Sener
- Department of Biophysics, School of Medicine, Istanbul University, Istanbul, Turkey
| | - Göker Kuluslu
- 3D Medical and Industrial Design Laboratory, Istanbul University, Istanbul, Turkey
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Kurt-Bayrakdar S, Kose O, Altin A, Akyildiz K, Mercantepe T, Bostan SA, Kose TE, Tumkaya L, Yilmaz A. Periodontitis exacerbates the renal degenerative effects of obesity in rats. J Periodontal Res 2021; 56:1058-1069. [PMID: 34328646 DOI: 10.1111/jre.12919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 06/21/2021] [Accepted: 07/20/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND/OBJECTIVES Obesity and periodontitis are systemic subclinical inflammatory diseases with established negative renal effects. The aim of this animal study was to thoroughly investigate the possible effects of these two diseases on renal structure and function. METHODS Thirty-two male Sprague Dawley rats were divided into four groups: control (C), obesity (Ob), experimental periodontitis (Ep), and Ob + Ep. The first 16 weeks of the experiment were aimed for the induction of obesity and the last 5 weeks for the induction of periodontitis. Throughout the experimental period, the C and Ep groups were fed standard rat chow, while the Ob groups (Ob and Ob + Ep) were fed high-fat rat chow. Right after the establishment of obesity, periodontal tissue destruction was achieved by placing 3.0 silk sutures in sub-paramarginal position around the cervices of mandibular right-left first molar teeth and preserving them for 5 weeks. On the last day of the 22nd week, following blood collection, all rats were euthanized, and kidneys and mandibles were collected. Alveolar bone loss was measured on microcomputed tomographic slices. Histopathological evaluations (light microscopy, semi-quantitative analysis of renal corpuscle area, and immunohistochemical analysis of caspase-3 activity) were done on right kidneys and biochemical evaluations (malonyl-aldehyde [MDA], glutathione [GSH], total oxidant status [TOS], total antioxidant status [TAS], oxidative stress [OSI], tumor necrosis factor-α [TNF-α], interleukin-1β [IL-1β], matrix metalloproteinase [MMP]-8, MMP-9, and cathepsin D [CtD] levels) were done on left kidneys. Renal functional status was evaluated with levels of serum creatinine, urea, and cystatin C. RESULTS Periodontal bone loss was significantly higher in the Ep and Ob + Ep groups, compared with the C and Ob groups (p < .05). All parameters except TAS and GSH were highest in the Ob + Ep group, and the differences were statistically significant compared with the control group (p < .05). Although the mean TAS and GSH levels were lower in the Ob + Ep group than the other groups, the differences were not statistically significant (p > .05). While the atypical glomeruli score was significantly higher in the Ob + Ep group than in all other groups (p < .05), the acute tubular necrosis and histopathological scores were significantly different only compared with the control group (p < .05). CONCLUSION This experimental study showed that the negative effects of the co-existence of periodontitis and obesity on inflammatory stress and apoptotic changes in the kidneys together with the functional parameters were significantly more severe, compared with the presence of one of these diseases alone. TNF-α could have a central role in the periodontitis and obesity-related structural and functional renal changes.
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Affiliation(s)
- Sevda Kurt-Bayrakdar
- Department of Periodontology, School of Dentistry, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Oğuz Kose
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ahmet Altin
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Kerimali Akyildiz
- Department of Medical Services and Techniques, School of Health Care Services Vocational, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Semih Alperen Bostan
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Taha Emre Kose
- Department of Dentomaxillofacial Radiology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yilmaz
- Department of Biochemistry, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Pergel A, Demiral G, Tümkaya L, Mercantepe T, Özdemir A, Kalcan S, Çolakoğlu MK, Yılmaz A, Bedir R, Karakaya A. The protective effects of topiramate on intestinal injury induced with infrarenal aortic occlusion via oxidative stress and apoptosis. Clin Exp Hypertens 2021; 43:604-609. [PMID: 33966542 DOI: 10.1080/10641963.2021.1925680] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Purpose: Prolonged surgical procedures and some clinical conditions such as surgeries of thoracoabdominal aorta, mesenteric ischemia, cardiopulmonary bypass, strangulated hernias and neonatal necrotizing enterocolitis may cause decreased perfusion and injury of relevant organs and tissues. After reperfusion, injuries may get worse, leading to ischemia-reperfusion (I/R) injury. Reperfusion following arterial clamping allows oxygen to ischemic tissues and produce injury by multiple mechanisms, including neutrophilic infiltration, intracellular adhesion molecules, and generation of reactive oxygen radicals. In this study with the analysis of SOD, MDA and Caspase-3 levels, we aimed to investigate the effect of topiramate on the outcome of I/R occured after abdominal aorta clamping on rats.Materials and Methods: Totaly 24 Sprague-Dawley male rats were randomly divided into three experimental groups; the control group (n = 8), I/R (n = 8) and I/R+ topiramate (n = 8). Topiramate (100 mg/kg/day); 50 mg/kg (single dose) was administered intraperitoneally after being diluted with saline 5 days before I/R.Results: The intestinal tissue of the ischemia group displayed hemorrhage, Crypts of Lieberkuhn degeneration, ulceration, vascular congestion and edematous fields as a result of aortic occlusion. We also observed that MDA levels and Caspase-3 positivity increased and SOD levels decreased in the small intestine. However, topiramate administration decreased Crypts of Lieberkuhn degeneration, ulceration, vascular congestion and edematous fields, Caspase-3 positivity, and MDA levels.Conclusion: Our findings suggest that topiramate is effective against aortic occlusion-induced intestinal injury by reducing oxidative stress and apoptosis.
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Affiliation(s)
- Ahmet Pergel
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Gökhan Demiral
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tümkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ali Özdemir
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Süleyman Kalcan
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Muhammed Kadri Çolakoğlu
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yılmaz
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Recep Bedir
- Department of Pathology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ahmet Karakaya
- Department of General Surgery, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Saral S, Topçu A, Alkanat M, Mercantepe T, Akyıldız K, Yıldız L, Tümkaya L, Yazıcı ZA, Yılmaz A. Apelin-13 activates the hippocampal BDNF/TrkB signaling pathway and suppresses neuroinflammation in male rats with cisplatin-induced cognitive dysfunction. Behav Brain Res 2021; 408:113290. [PMID: 33845103 DOI: 10.1016/j.bbr.2021.113290] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 04/02/2021] [Accepted: 04/03/2021] [Indexed: 01/01/2023]
Abstract
It has been established that cisplatin causes neuronal damage and cognitive impairment. However, the mechanism is not sufficiently clear. Apelin-13 is an endogenous peptide with strong neuroprotective effects through the synthesis of neurotrophic factors and suppression of inflammation. The aim of this study was to investigate the role of brain-derived neurotrophic factor/tropomyosin receptor kinase B (BDNF/TrkB) signaling pathway and the potential inhibitory effects of apelin-13 in the mechanism of cisplatin-induced hippocampal damage and cognitive impairment. Apelin-13 was administered to adult sprague dawley male rats at a dose of 20 nmol/kg every day for 4 weeks, cisplatin was administered at a dose of 5 mg/kg once a week for 4 weeks. The spatial and recognition memory tests of the rats were performed on the 5th week. BDNF and the inflammatory cytokines tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) levels were measured by ELISA in hippocampal homogenates. Pyramidal neuron and glial cell damage in the hippocampal CA1, CA3 and dentate gyrus (DG) were analyzed histologically. TrkB activity in the hippocampus was determined by immunohistochemical methods. Cisplatin impaired spatial and recognition memory in rats, while apelin-13 improved spatial memory but did not affect recognition memory. Cisplatin suppressed BDNF in the hippocampus while increased IL-1β and TNF-α. In contrast, apelin-13 administration increased BDNF but significantly suppressed TNF-α and IL-1B. Cisplatin caused pyramidal neuron and glial cell damage in CA1, CA3 and DG. In the cisplatin + apelin-13 group, however, pyramidal neuron and glial cell damage was less than those without apelin-13. Cisplatin increased TrkB activity in the hippocampus, which was counteracted by apelin-13. In conclusion, apelin-13 reduced the cisplatin-induced cognitive deficiency, by suppressing inflammation and stimulating the synthesis and activation of neurotrophic factors in hippocampal tissue.
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Affiliation(s)
- Sinan Saral
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Physiology, Rize, Turkey.
| | - Atilla Topçu
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Medical Pharmacology, Rize, Turkey.
| | - Mehmet Alkanat
- Giresun University, Faculty of Medicine, Department of Physiology, Giresun, Turkey.
| | - Tolga Mercantepe
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Histology and Embryology, Rize, Turkey.
| | - Kerimali Akyıldız
- Recep Tayyip Erdogan University, School of Healh Care Services Vocational, Department of Medical Services and Techniques, Rize, Turkey.
| | - Lamiye Yıldız
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Physiology, Rize, Turkey.
| | - Levent Tümkaya
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Histology and Embryology, Rize, Turkey.
| | - Zihni Açar Yazıcı
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Microbiology, Rize, Turkey.
| | - Adnan Yılmaz
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Biochemistry, Rize, Turkey.
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Hemsinli D, Tumkaya L, Ergene S, Karakisi SO, Mercantepe T, Çınar S, Yilmaz A. Resveratrol prevents acute renal injury in a model of ruptured abdominal aortic aneurysm. Hum Exp Toxicol 2021; 40:555-565. [PMID: 32938235 DOI: 10.1177/0960327120958039] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To examine the biochemical and histopathological effects of ischemia/reperfusion (I/R) injury in a ruptured abdominal aortic aneurysm (RAAA) model in rats, and to investigate the potential protective role of resveratrol. METHODS Thirty-two male Sprague-Dawley rats were randomly assigned into four groups-control, I/R, sham (I/R + solvent/dimethyl sulfoxide), and I/R + resveratrol. The control group underwent midline laparotomy only. In the other groups, infrarenal vascular clamps were attached following 60-min shock to the abdominal aorta. Ischemia was applied for 60 min followed by reperfusion for 120 min. In the I/R + resveratrol group, intraperitoneal 10 mg/kg resveratrol was administered 15 min prior to ischemia and immediately before reperfusion. The I/R + dimethyl sulfoxide group received dimethyl sulfoxide, and the I/R group was given saline solution. All animals were sacrificed by exsanguination from the carotid artery at the end of the experiment. In addition to histopathological examination of the rat kidney tissues, malondialdehyde, glutathione, catalase, and nitric oxide levels were also investigated. RESULTS A decrease in glutathione, catalase and nitric oxide levels, together with increases in malondialdehyde levels, numbers of apoptotic renal tubular cells, caspase-3 levels, and tubular necrosis scores, were observed in the IR and I/R + dimethyl sulfoxide groups. In contrast, resveratrol increased glutathione, catalase and nitric oxide levels in renal tissues exposed to I/R, while reducing malondialdehyde levels, apoptotic renal tubular cell numbers, caspase-3 levels, and tubular necrosis scores. CONCLUSION Our findings suggest that resveratrol can be effective against I/R-related acute kidney damage developing during RAAA surgery by reducing oxidative stress and apoptosis.
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Affiliation(s)
- D Hemsinli
- Department of Cardiovascular Surgery, Faculty of Medicine, 175650Recep Tayyip Erdogan University, Rize, Turkey
| | - L Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, 175650Recep Tayyip Erdogan University, Rize, Turkey
| | - S Ergene
- Department of Cardiovascular Surgery, Faculty of Medicine, 175650Recep Tayyip Erdogan University, Rize, Turkey
| | - S O Karakisi
- Department of Cardiovascular Surgery, Faculty of Medicine, 175650Recep Tayyip Erdogan University, Rize, Turkey
| | - T Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, 175650Recep Tayyip Erdogan University, Rize, Turkey
| | - S Çınar
- Department of Histology and Embryology, Faculty of Medicine, 175650Recep Tayyip Erdogan University, Rize, Turkey
| | - A Yilmaz
- Department of Medical Biochemistry, Faculty of Medicine, 175650Recep Tayyip Erdogan University, Rize, Turkey
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Terzi S, Özgür A, Çeliker M, Mercantepe T, Yilmaz A, Tümkaya L, Kaya Ş, Demir E, Dursun E. The protective effect of astaxanthin on cisplatin-induced ototoxicity. ADV CLIN EXP MED 2021; 30:315-321. [PMID: 33789004 DOI: 10.17219/acem/133081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND Promising studies have been conducted with many substances to reduce the ototoxic effects of cisplatin, but there is no treatment that completely eliminates the ototoxic effect. OBJECTIVES To determine the effectiveness of astaxanthin (ASX) as a protective agent against cisplatin-induced ototoxicity. MATERIAL AND METHODS Thirty-six rats were randomly divided into 6 groups. Group 1 received no drug injections except for anesthetics; group 2 received intraperitoneal (IP) olive oil only for 8 days; group 3 received only IP ASX 75 mg/kg dissolved in olive oil for 8 days; group 4 received a single dose of only IP 16 mg/kg cisplatin on the 5th day; group 5 received 25 mg/kg ASX IP daily for 8 days and a single 16 mg/kg dose of cisplatin on the 5th day; group 6 received 75 mg/kg ASX IP daily for 8 days and a single 16 mg/kg dose of cisplatin on the 5th day. The animals were tested for distortion product otoacoustic emissions (DPOAE) before and 3 days after cisplatin treatment. The animals in all groups were sacrificed under anesthesia on the 10th day. Before sacrifice, inferior vena cava blood samples were drawn into commercial tubes for biochemical analysis and their cochlea were prepared for histological analysis. RESULTS The ASX+cisplatin groups demonstrated significantly higher DPOAE thresholds when compared to the cisplatin-only group (p < 0.05). The ASX 25 mg/kg/day+cisplatin group showed a significant increase in total antioxidant capacity compared to the cisplatin-only group, whereas the ASX 75 mg/kg/day+cisplatin group had significantly lower total oxidative stress and oxidative stress index. Histologic results showed that the cortical organ was better preserved in the ASX+cisplatin groups compared to the cisplatin-only group, and the degeneration in the spiral ganglion and inner and outer hair cells was less visible in the ASX groups. CONCLUSIONS Astaxanthin can protect hearing from cisplatin-induced ototoxicity, prevent cellular degeneration and significantly reduce oxidative stress.
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Affiliation(s)
- Suat Terzi
- Department of Otorhinolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Abdulkadir Özgür
- Department of Otorhinolaryngology, Samsun Health Practices and Research Center, Ondokuz Mayıs University, Turkey
| | - Metin Çeliker
- Department of Otorhinolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yilmaz
- Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tümkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Şeyma Kaya
- Department of Otorhinolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Emine Demir
- Department of Otorhinolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Engin Dursun
- Department of Otorhinolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Celiker M, Beyazal Celiker F, Tumkaya L, Oghan F, Ozgur A, Mercantepe T, Terzi S, Beyazal M, Turan A, Cinar S, Zengin E, Demir E, Dursun E. Effects of long-term Doppler ultrasound exposure on cochlea and cochlear nucleus in prenatal period in an experimental model. J Matern Fetal Neonatal Med 2021; 35:5117-5124. [PMID: 33615966 DOI: 10.1080/14767058.2021.1875431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND New generation Doppler ultrasonography (DUSG) application effects on cochlea and cochlear nucleus (CN) are unclear. We aimed to investigate the effects of new generation DUSG application at different frequencies in prenatal period on cochlea and CN in rats. OBJECTIVE Twenty-four pregnant female rats were divided into three groups (n = 8). Group 1 was the control group and was not subjected to any treatment. Group 2 was determined as the USG every day (USGED) treatment group. Group 2 has received DUSG application every day from the 4th to 18th day (20 min/15 per day). Group 3 has received DUSG application as "2 days/one dose as every other day application" (USG2D1) from the 4th to 18th day (20 min/8 every other day). Twenty-four female rats were sacrificed in 21 days. Also, 24 pups were sacrificed after two days. First day after born, the cochlear activities of the right ears of all pups were examined using DPOAEs. Second day, neural tissues from CN were evaluated histopathologically and immunohistochemically. RESULTS There was no any statistical difference between the groups in respect of histopathologically. USGED group showed mild caspase-3 positive neurons and glial cells. However, there was no significant difference between the USGED and other groups (p>.05). Similarly, the rats applied with USG2D1 had mild caspase-3 expression, but no significant difference between the USG2D1 and other groups (p>.05). Differences in DPOAE amplitudes, and therefore in cochlear activity, between the groups were revealed. The decrease in cochlear activity between the groups involved frequencies at 2, 8, 16, and 32 kHz (p<.05). CONCLUSIONS Multiple administration of new generation DUSG to pregnant rats has not shown harmful effects on the cochlear neural tissue. High frequencies are more sensitive in cochlea to apply DUSG.
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Affiliation(s)
- Metin Celiker
- Department of Otorhinolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Fatma Beyazal Celiker
- Department of Radiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology-Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Fatih Oghan
- Department of Otorhinolaryngology, Faculty of Medicine, Kutahya Saglik Bilimleri University, Kutahya, Turkey
| | - Abdulkadir Ozgur
- Department of Otorhinolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology-Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Suat Terzi
- Department of Otorhinolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Mehmet Beyazal
- Department of Radiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Arzu Turan
- Department of Radiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Seda Cinar
- Department of Histology-Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ertan Zengin
- Department of Radiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Emine Demir
- Department of Radiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Engin Dursun
- Department of Otorhinolaryngology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Kose O, Kurt Bayrakdar S, Unver B, Altin A, Akyildiz K, Mercantepe T, Bostan SA, Arabaci T, Turker Sener L, Emre Kose T, Tumkaya L, Yilmaz A, Kuluslu G. Melatonin improves periodontitis-induced kidney damage by decreasing inflammatory stress and apoptosis in rats. J Periodontol 2020; 92:22-34. [PMID: 33251634 DOI: 10.1002/jper.20-0434] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/14/2020] [Accepted: 10/14/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Two main aims of this animal study were to inspect the possible effects of periodontitis on the structure and functions of the kidneys and the therapeutic effectiveness of melatonin. METHODS Twenty-four male Sprague-Dawley rats were randomly divided into three groups: control, experimental periodontitis (Ep), and Ep-melatonin (Ep-Mel). Periodontitis was induced by placing 3.0-silk sutures sub-paramarginally around the cervix of right-left mandibular first molars and maintaining the sutures for 5 weeks. Then melatonin (10 mg/kg body weight/day, 14 days), and the vehicle was administered intraperitonally. Mandibular and kidney tissue samples were obtained following the euthanasia. Periodontal bone loss was measured via histological and microcomputed tomographic slices. On right kidney histopathological and immunohistochemical, and on the left kidney biochemical (malonyl-aldehyde [MDA], glutathione, oxidative stress [OSI], tumor necrosis factor [TNF]-α, interleukin [IL]-1β, matrix metalloproteinase [MMP]-8, MMP-9, and cathepsin D levels) evaluations were performed. Renal functional status was analyzed by levels of serum creatinine, urea, cystatin-C, and urea creatinine. RESULTS Melatonin significantly restricted ligature-induced periodontal bone loss (P <0 .01) and suppressed the levels of proinflammatory cytokines (TNF-α and IL-1β), oxidative stress (MDA and OSI), and proteases (MMP-8, MMP-9, and CtD) that was significantly higher in the kidneys of the rats with periodontitis (P <0.05). In addition, periodontitis-related histological damages and apoptotic activity were also significantly lower in the Ep-Mel group (P <0.05). However, the markers of renal function of the Ep group were detected slightly impaired in comparison with the control group (P >0.05); and the therapeutic activity of melatonin was limited (P >0.05). CONCLUSION Melatonin restricts the periodontitis-induced inflammatory stress, apoptosis, and structural but not functional impairments.
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Affiliation(s)
- Oğuz Kose
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Sevda Kurt Bayrakdar
- Department of Periodontology, School of Dentistry, Eskişehir Osmangazi University, Eskisehir, Turkey
| | - Büsra Unver
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ahmet Altin
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Kerimali Akyildiz
- Department of Medical Services and Techniques, School of Healh Care Services Vocational, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Semih Alperen Bostan
- Department of Periodontology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Taner Arabaci
- Department of Periodontology, School of Dentistry, Ataturk University, Erzurum, Turkey
| | - Leyla Turker Sener
- Department of Biophysics School of Medicine, Istanbul University, Istanbul, Turkey
| | - Taha Emre Kose
- Department of Dentomaxillofacial Radiology, School of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yilmaz
- Department of Biochemistry, School of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Göker Kuluslu
- 3D Medical and Industrial Design Laboratory, Istanbul University, Istanbul, Turkey
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Suzan ZT, Tumkaya L, Mercantepe T, Atak M, Uydu HA. The effect of imatinib administered in the prenatal period on testis development in rats. Hum Exp Toxicol 2020; 40:634-648. [PMID: 32990058 DOI: 10.1177/0960327120958458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND The purpose of this study was to examine the effects of exposure to imatinib in the prenatal period on testis development in rats. METHODS Although all the study groups received intraperitoneal imatinib on prenatal days 1-8, no pregnancy occurred in the Imatinib-80 group. Immunohistochemical analysis, TUNEL, c-kit and PDGF staining revealed no difference between the groups in terms of positivity scoring. RESULTS A significant decrease was detected in total sperm counts in the Imatinib-20 group compared to the control group, but the sperm count was higher in the Imatinib-60 group than in the Imatinib-20 group. At biochemical measurements, the drug increased oxidative stress in the testis and serum in the Imatinib-20 group, but caused a decrease in tissue in the Imatinib-60 group. Thiol measurements revealed a decrease in the testis and serum in the Imatinib-60 group, while an increase in serum measurements was observed in the Imatinib-40 group. Analysis revealed no difference between the groups in terms of protamine and histone gene expression levels in testis tissue exposed to imatinib. CONCLUSION Our findings show that prenatal exposure to imatinib can lead to histopathological and biochemical changes in testis tissue, but that no adverse effect occurs in nuclear maturation of germ cells during spermiogenesis.
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Affiliation(s)
- Z Topal Suzan
- Department of Histology and Embryology, Faculty of Medicine, 175650Recep Tayyip Erdoğan University, Rize, Turkey
| | - L Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, 175650Recep Tayyip Erdoğan University, Rize, Turkey
| | - T Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, 175650Recep Tayyip Erdoğan University, Rize, Turkey
| | - M Atak
- Department of Biochemistry, Faculty of Medicine, 187475Recep Tayyip Erdoğan University, Rize, Turkey
| | - H A Uydu
- Department of Biochemistry, Faculty of Medicine, 187475Recep Tayyip Erdoğan University, Rize, Turkey
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Colak S, Gurlek B, Topcu A, Tumkaya L, Mercantepe T, Yilmaz A. Protective effects of nebivolol on ovarian ischemia-reperfusion injury in rat. J Obstet Gynaecol Res 2020; 46:2407-2416. [PMID: 32961615 DOI: 10.1111/jog.14503] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 07/14/2020] [Accepted: 08/29/2020] [Indexed: 12/12/2022]
Abstract
AIM Ovarian torsion is a common gynecological emergency of reproductive ages, occurring at rates of 2.7-7.4%. This study aimed to evaluate the antioxidant effects of Nebivolol (NEB) and histopathological changes in experimental ischemic (I) and ischemic-reperfusion (I/R) injury in rat ovaries. METHODS Forty-eight adult female rats were randomly separated into six groups as group 1 (control) receiving an oral saline solution for 3 days; group 2 (I) that underwent ischemia for 3 h with the application of atraumatic vascular clips; group 3 (I/R); group 4 (I + NEB) receiving 10 mg/kg NEB by oral gavage 30 min prior to the ischemia induction; group 5 (I/R + NEB) receiving 10 mg/kg NEB, and group 6 (control + NEB) receiving oral 10 mg/kg NEB for 3 days before ischemia induction followed by consequent reperfusion. Ovarian tissue damage was scored by histopathological analysis. Ovarian tissue malondialdehyde (MDA) and glutathione (GSH) levels were measured biochemically. RESULTS The levels of MDA and tumor necrosis factor-alpha (TNF-α), and TUNEL assay positivity scores increased in the I and I/R groups. GSH levels decreased in all case groups (P < 0.05). The oral administration of NEB (10 mg/kg) to the I- and I/R-groups reduced the levels of MDA and TNF-α and TUNEL assay immunopositivity scores (P < 0.05). GSH levels increased in the treatment groups. CONCLUSION The current experimental ovarian torsion study suggests a protective role for NEB against I and I/R injury in rat ovaries. NEB may be a novel agent for decreasing ovarian I/R injury.
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Affiliation(s)
- Sabri Colak
- Department of Obstetrics and Gynecology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Beril Gurlek
- Department of Obstetrics and Gynecology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Atilla Topcu
- Department of Pharmacology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Adnan Yilmaz
- Department of Medical Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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Kostakoglu U, Mercantepe T, Yilmaz HK, Tumkaya L, Batcik S, Pinarbas E, Uydu HA. The Protective Effects of Perindopril Against Acute Kidney Damage Caused by Septic Shock. Inflammation 2020; 44:148-159. [PMID: 32803666 DOI: 10.1007/s10753-020-01316-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Acute kidney injury (AKI) resulting from septic shock caused by sepsis is an important health problem encountered at rates of 55-73%. Increasing oxidative stress and inflammation following sepsis is a widely observed condition with rising mortality rates. The purpose of this study was to determine whether perindopril (PER) can prevent sepsis-associated AKI with its antioxidant, anti-inflammatory, and anti-apoptotic effects. The control group received an oral saline solution only for 4 days. Cecal ligation and puncture (CLP)-induced sepsis only was applied to the CLP group, while the CLP + PER (2 mg/kg) received CLP-induced sepsis together with 2 mg/kg PER via the oral route for 4 days before induction of sepsis. Finally, all rats were euthanized by anesthesia and sacrificed. TBARS, total SH levels and NF-κβ, TNF-α, and Caspase-3 expression were then calculated for statistical analysis. TBARS, total SH, NF-kβ/p65, TNF-a, and Caspase-3 levels increased in the CLP group. In contrast, oral administration of PER (2 mg/kg) to septic rats reduced TBARS levels and NF-kβ/p65, TNF-α, and Caspase-3 immunopositivity at biochemical analysis. PER treatment appears to be a promising method for preventing sepsis-induced acute kidney injury through its antioxidant anti-inflammation and anti-apoptotic activities.
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Affiliation(s)
- Ugur Kostakoglu
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, 53100, Rize, Turkey.
| | - Tolga Mercantepe
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, 53100, Rize, Turkey
| | - Hulya Kilic Yilmaz
- Department of Medical Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, 53100, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdogan University, 53100, Rize, Turkey
| | - Sule Batcik
- Department of Anaesthesiology and Reanimation, Faculty of Medicine, Recep Tayyip Erdogan University, 53100, Rize, Turkey
| | - Esra Pinarbas
- Department of Medical Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, 53100, Rize, Turkey
| | - Huseyin Avni Uydu
- Department of Medical Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, 53100, Rize, Turkey
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Hemşinli D, Ergene S, Karakişi SO, Mercantepe T, Tumkaya L, Yilmaz A, Akyilzdiz K. Tea Grape Reduces Abdominal Aortic Occlusion-Induced Lung Injury. Braz J Cardiovasc Surg 2020; 35:512-520. [PMID: 32864932 PMCID: PMC7454615 DOI: 10.21470/1678-9741-2019-0392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Introduction Ischemia-associated mortality caused by aortic cross-clamps, as in ruptured abdominal aorta aneurysm surgeries, and reperfusion following their removal represent some of the main emergency conditions in cardiovascular surgery. The purpose of our study was to examine the potential protective effect of tea grape against aortic occlusion-induced lung injury using biochemical, histopathological, immunohistochemical, and quantitative analyses. Methods Thirty-two male Sprague-Dawley rats were randomly assigned into four groups: control (healthy), glycerol + ischemia/reperfusion (I/R) (sham), I/R, and I/R + tea grape. Results Following aortic occlusion, we observed apoptotic pneumocytes, thickening in the alveolar wall, edematous areas in interstitial regions, and vascular congestion. We also observed an increase in pulmonary malondialdehyde (MDA) levels and decrease in pulmonary glutathione (GSH). However, tea grape reduced apoptotic pneumocytes, edema, vascular congestion, and MDA levels, while increased GSH levels in lung tissue. Conclusion Our findings suggest that tea grape is effective against aortic occlusion-induced lung injury by reducing oxidative stress and apoptosis.
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Affiliation(s)
- Doğuş Hemşinli
- Department of Cardiovascular Surgery, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
| | - Saban Ergene
- Department of Cardiovascular Surgery, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
| | - Sedat Ozan Karakişi
- Department of Cardiovascular Surgery, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
| | - Adnan Yilmaz
- Department of Medical Biochemistry, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
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Ergene Ş, Hemşinli D, Karakişi SO, Mercantepe T, Tumkaya L, Yilmaz A. The Role of Vaccinium Myrtillus in the Prevention of Renal Injury in an Experimental Model of Ruptured Abdominal Aortic Aneurysm. Braz J Cardiovasc Surg 2020; 35:490-497. [PMID: 32864929 PMCID: PMC7454617 DOI: 10.21470/1678-9741-2019-0121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Objective To examine the biochemical and histopathological renal effects of ischemia/reperfusion (I/R) injury using a ruptured abdominal aortic aneurysm (RAAA) model in rats and to investigate the potential protective effects of whortleberry (Vaccinium myrtillus). Methods Thirty-two male Sprague-Dawley rats were randomly assigned into four groups - control, sham (I/R+glycerol), I/R, and I/R+whortleberry. Midline laparotomy alone was performed in the control group. Atraumatic abdominal clamps were attached under anesthesia to the abdominal aorta beneath the level of the renal artery in the groups subjected to I/R. Sixty-minute reperfusion was established one hour after ischemia. The sham group received five intraperitoneal doses of glycerol five days before I/R. The I/R+whortleberry group received a single intraperitoneal 50 mg/kg dose diluted with saline solution five days before I/R. All animals were finally euthanized by cervical dislocation following 60-min reperfusion. Results Increases were observed in malondialdehyde (MDA) levels and tubular necrosis scores (TNS) in thin kidney tissues and in numbers of apoptotic renal tubule cells, together with a decrease in glutathione (GSH) levels, in sham and I/R groups. In contrast, we observed a decrease in MDA levels, TNS, and numbers of apoptotic renal tubule cells, and an increase in GSH levels with whortleberry treatment compared to the I/R group. Conclusion Our findings suggest that whortleberry may be effective against acute kidney injury by reducing oxidative stress and apoptosis.
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Affiliation(s)
- Şaban Ergene
- Department of Cardiovascular Surgery, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
| | - Doğuş Hemşinli
- Department of Cardiovascular Surgery, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
| | - Sedat Ozan Karakişi
- Department of Cardiovascular Surgery, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
| | - Tolga Mercantepe
- Department of Histology and Embryology, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
| | - Levent Tumkaya
- Department of Histology and Embryology, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
| | - Adnan Yilmaz
- Department of Medical Biochemistry, Recep Tayyip Erdogan University, Faculty of Medicine, Rize, Turkey
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Koksal V, Mercantepe T, Tumkaya L, Oktem IS. Less Use of the Bipolar Cautery can Prevent Postlaminectomy Epidural Fibrosis: An Experimental Study in Rats. Turk Neurosurg 2020; 30:217-224. [PMID: 31573067 DOI: 10.5137/1019-5149.jtn.27544-19.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
AIM To investigate the role of bipolar electrocautery in the occurrence of epidural fibrosis following lumbar spine laminectomy in a rat model. MATERIAL AND METHODS Fourteen male Sprague-Dawley rats (age: 4-6 months, weight: 250-300 g) were randomly divided into two groups, a bipolar group (Group I) and a control group (Group II). Laminectomy was performed between the L1 and L3 levels. In Group I (n=7), a laminectomy was carried out and soft tissue around the spinal cord was coagulated by using a bipolar electrocautery. In the control group (n=7), only laminectomy was performed. The animals were sacrificed 4 weeks after surgery, and post-laminectomy epidural fibrosis (PLEF) was evaluated. Macropathological, qualitative and quantitative histological evaluations as well as immunohistochemical staining including transforming growth factor-β (TGF-β), collagen I and collagen III were performed. RESULTS The numbers of TGF-β positive cells staining (PCS) were 3.00 ± 0.46 for Group I and 1.00 ± 0.52 for Group II. The numbers of collagen I PCS were 2.00 ± 0.93 for Group I and 1.25 ± 0.46 for Group II. The numbers of collagen III PCS were 2.25 ± 0.76 for Group I, 1.25 ± 0.46 for Group II, and TGF-β PCS than Group II (p≤0.05). Compared with the control group, Group I's formation of epidural fibrosis was significantly increased. CONCLUSION Our study clearly demonstrated that the use of bipolar cauterisation is associated with increased PLEF in the experimental animal model. Thus, limiting the use of bipolar cauterisation may be effective in reducing this complication.
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Affiliation(s)
- Vaner Koksal
- University of Health Sciences, Samsun Health Practices and Research Center, Department of Neurosurgery, Samsun, Turkey
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